[Paleontology • 2026] Cicero spectabilis • Aptian archaeoniscid isopod from the Araripe Basin supports Tethyan-linked dispersal into Gondwanan lacustrine systems

Cicero spectabilis 

Lima, Anker, Heads, Pinheiro & Santana, 2026 

DOI: doi.org/10.1038/s41598-026-59890-0

Life reconstruction of Cicero spectabilis n. gen. n. sp. in the Aptian lacustrine environment of the Crato Formation, Araripe Basin, Brazil, showing several individuals scavenging on a dead fish (Dastilbe) on the lake floor, surrounded by aquatic vegetation (Notocyamus hydrophobus), fishes and arthropods.  

 Illustration by Maurílio Oliveira (paleoartist, MN/UFRJ).

Abstract

A new genus and species of fossil isopod, Cicero spectabilis n. gen. n. sp. is described from the Early Cretaceous (Aptian) Nova Olinda Member of the Crato Formation, Araripe Sedimentary Basin, Ceará, northeastern Brazil. The holotype, preserved in laminated limestones, represents the first confirmed record of the family Archaeoniscidae within this stratigraphic unit and extends the previously known paleogeographic distribution of archaeoniscid-like isopods into Gondwana lacustrine settings. The new genus is distinguished from other taxa currently referred to Archaeoniscidae—Archaeoniscus, Ferreniscus and Codoisopus, by its broad, ovate body, distinctive antennular subdivision, and a fan-like caudal structure formed by birramous uropods with well-differentiated exopod and endopod, combined with a rounded subrectangular pleotelson bearing a row of posterior setae. The exceptional preservation of C. spectabilis n. gen. n. sp. enables a detailed assessment of functionally relevant characters and supports interpretation of a benthic lifestyle on soft, low-energy substrates. A conservative concept of the family and a combination of body, pleon-pleotelson and antennular features justifies the placement of Cicero n. gen. within this extinct sphaeromatidean lineage. Within this framework, the occurrence C. spectabilis n. gen. n. sp. in a stratified lacustrine system of the Araripe Basin, together with other Mesozoic archaeoniscid-like records, suggest that some lineages currently assigned to Archaeoniscidae were able to colonize a range of non-marine environments during the Early Cretaceous, while also underscoring the need for a comprehensive phylogenetic reassessment of the group.

Keywords: Malacostraca, Sphaeromatidea, Fossil isopod, Crustacean, Santana group, Archaeoniscidae, Crato formation

Holotype of Cicero spectabilis n. gen. n. sp. from the Aptian Nova Olinda Member of the Crato Formation, Araripe Basin, Brazil (MPSC 9701). A, Ventral view of the specimen preserved in laminated limestone. B, Interpretative line drawing highlighting cephalic appendages, pereopods, pleon, pleotelson, and uropods. Scale bars: 2 mm.

Cicero spectabilis n. gen. n. sp.

Life reconstruction of Cicero spectabilis n. gen. n. sp. in the Aptian lacustrine environment of the Crato Formation, Araripe Basin, Brazil, showing several individuals scavenging on a dead fish (Dastilbe) on the lake floor, surrounded by aquatic vegetation (Notocyamus hydrophobus), fishes and arthropods. Coloration and most dorsal features are conjectural and based on extant sphaeromatidean isopods. Illustration by Maurílio Oliveira (paleoartist, MN/UFRJ).

Daniel Lima, Arthur Anker, Sam W. Heads, Allysson P. Pinheiro and William Santana. 2026. Aptian archaeoniscid isopod from the Araripe Basin supports Tethyan-linked dispersal into Gondwanan lacustrine systems. Scientific Reports. 16: 23631. DOI: doi.org/10.1038/s41598-026-59890-0 [19 July 2026]

 

[Botany • 2026] Cryptanthus pataxoanus & C. beuckeri • Two Ornamental Species of Cryptanthus (Bromeliaceae: Bromelioideae) on the brink of Extinction: A New Species and its congener from the 19th century

 

Cryptanthus pataxoanus  Forzza & Leme,

in Leme, Fernandez, Fontana, Almeida et Forzza, 2026. 

DOI: doi.org/10.11646/phytotaxa.763.3.1 

Abstract

The authors describe and illustrate a new species of Cryptanthus, C. pataxoanus, found within the Monte Pascoal National and Historical Park, and present new data on its closest morphological relative, C. beuckeri, both endemic to the Atlantic Forest of the state of Bahia, Brazil, and assessed as Critically Endangered (CR). The new taxon represents one of the most ornamental discoveries in recent years due to its marbled foliage, with contrasting greenish-yellow and dark green colors, which is similar to C. beuckeri. The main differences between C. pataxoanus and its closest relative include leaf blades not petiolate or the basal ones sometimes subpetiolate, the much broader portion of the blades distinctly longer, the narrower sepals covered by brown-centered trichomes, and petals without glandulose trichomes. The discovery of the new species results from cooperative work with the Pataxó indigenous community living in Barra Velha and Barra Velha do Monte Pascoal Indigenous Lands, located within the boundaries of the Monte Pascoal National and Historical Park. It symbolizes the inexhaustible richness of the Brazilian biodiversity in general and the Atlantic Forest of southern Bahia in particular, despite its current coexistence with high levels of threat.

Monocots, Atlantic Forest, Monte Pascoal National and Historical Park, morphology, taxonomy

Cryptanthus pataxoanus (Umburanas 141):
A, B. Details of the population at the type locality. C. Habit. Photos: S. Caram (A, B); E. Leme (C).

Cryptanthus pataxoanus (Umburanas 141):
A. Elongate stem. B. Details of the marginal spines. C. Inflorescence. D. Details of the inflorescence. E–O. Perfect flower. E. Floral bracts of the basal fascicles. F. Sepals. G. Petal and stamens. H. Stigma. I. Frontal view of the anther just before anthesis. J. Abaxial view of the anther just before the anthesis. K. Basal fascicle. L. Flower. M. Basal portion of the petal and stamens. N. Details of the apex of the sepals. O. Longitudinal cross section of the ovary. P–T. Staminate flower: P. Flower of the inner portion of the inflorescence. Q. Floral bract. R. Details of the apex of the sepal. S. Sepals. T. Longitudinal cross section of the ovary.

 Photos: E. Leme. Bars: A = 2 cm; B, C, K, L, P = 1 cm; D–G, M–O, Q–T = 5 mm; H–J = 1 mm.

 Cryptanthus pataxoanus Forzza & Leme, sp. nov.  

Diagnosis:—This new species can be distinguished from its morphologically closest relative, Cryptanthus beuckeri, by the leaf blades not petiolate or the basal ones sometimes subpetiolate, with subpetioles gradually merging into the much broader distal portion (vs. always distinctly petiolate, with petioles strongly contrasting with the much broader distal portion); the much broader portion of the blades longer (20–30 cm vs. 10–20 cm long); sepals with narrower lobes (vs. 2–2.5 mm vs. 3.5–4 mm wide) covered by distinctly brown-centered trichomes (vs. trichomes white); and petals without glandulose trichomes (vs. adaxially bearing glandulose trichomes).

Etymology:—The name of this new species honors the Pataxó indigenous people. They belong to the Macro-Jê linguistic family and have a long history of resistance, facing challenges such as reclaiming their traditional lands and promoting the value of their culture since the 16th century. The Pataxó predominantly inhabit the extreme south of Bahia, which includes the area of the Monte Pascoal National and Historical Park where the Barra Velha and Barra Velha do Monte Pascoal Indigenous Lands are located. They maintain strong traditions, such as the Patxohã language, rituals (like the Awê), and the use of body paintings that serve as cultural identifiers, in addition to promoting the conservation of the environment within their traditional natural territory.

A. Watercolor by the botanical artist Paulo Ormindo, depicting Cryptanthus pataxoanus.
B. Presentation of the C. pataxoanus and the original watercolor depicting the species during the ceremony commemorating the 64th anniversary of the creation of the Monte Pascoal National and Historical Park, as well as the reopening of the Visitor Center, by the Pataxó indigenous people who participated in the discovery.

A. Watercolor by the botanical artist Paulo Ormindo, depicting Cryptanthus pataxoanus. B. Presentation of the C. pataxoanus and the original watercolor depicting the species during the ceremony commemorating the 64th anniversary of the creation of the Monte Pascoal National and Historical Park, as well as the reopening of the Visitor Center, by the Pataxó indigenous people who participated in the discovery.
C–F. Illegal selective logging and habitat degradation associated with mule trampling used for clandestine timber extraction inside the park. Photos: R.C. Forzza (B); C. Rodrigues (C, D, E, F).

ELTON M. C. LEME, EDUARDO P. FERNANDEZ, ANDRÉ P. FONTANA, PEDRO S. DE ALMEIDA and RAFAELA C. FORZZA. 2026. Two Ornamental Species of Cryptanthus (Bromeliaceae, Bromelioideae) on the brink of Extinction: A New Species and its congener from the 19th century.  Phytotaxa. 763(3); 201-218. DOI: doi.org/10.11646/phytotaxa.763.3.1  [2026-06-24]

[Paleontology • 2026] Tametara mirim • Exceptional Brain and Ecological Diversity in the earliest Snakes

 

Tametara mirim

Simões, Sobral, Macrì, Ebel, Fachini, Martinelli, Nava, Paixão, Chiappe, Di-Poï & Hsiou, 2026

DOI: doi.org/10.1038/s41586-026-10809-9

Abstract

Understanding the ecological origin of snakes has remained a century-old challenge, hindered by an extremely sparse early fossil record and conflicting interpretations of fossil ecologies. Here we describe an exceptionally preserved Cretaceous fossil snake, Tametara mirim gen. et sp. nov., from Brazil, representing one of the earliest-diverging stem snakes. High-resolution micro-CT scans reveal unprecedented details of cranial nerves, inner ear and brain anatomy, enabling the most integrated reconstruction of stem snake neuroanatomy to date. Quantitative and qualitative endocast analyses demonstrate that Tametara had a brain morphology distinct from both other stem and extant snakes, revealing substantial early neuroanatomical disparity—and probably sensory functions—in snake evolution. Independent evidence from telencephalon shape and bone microstructure converges on a fossorial lifestyle for Tametara and non-fossorial for another stem snake: Dinilysia. These results indicate that major ecological transitions occurred early in snake evolution, and that known stem species do not represent the ancestral condition of crown snakes. Early snake evolution thus involved complex shifts in habitat use and sensory ecology, revealing greater ecological and neuroanatomical diversity than previously thought.

 

Systematic palaeontology

Squamata Oppel, 1811

Serpentes Linnaeus, 1758

Holotype (MPM 420) of Tametara mirim. 
 a, Photograph of the whole specimen with the articulated skull and postcranium in dorsal view. Ant, anterior; Bl, block number; Ce.V., cervical vertebrae; Do.V., dorsal vertebrae; Post, posterior; Sk, skull. b,c, Photographs of the skull in lateral (b) and dorsal (c) view. CB, compound bone; F, frontal; Oto, otoccipital; P, parietal; PFr, postfrontal; Pro, prootic; Ptg, pterygoid; Q, quadrate; Soc, supraoccipital; St, supratemporal. d–g, 3D renderings of an anterior precloacal (‘cervical’) vertebra in lateral (d) and anterolateral (e) views, and mid-precloacal (‘dorsal’) vertebra in dorsal (f) and left lateral (g) views. h–j, 3D renderings of the skull in the right lateral view (h) and with exposed brain endocasts in the right lateral (i) and dorsal (j) views. Mes., mesencephalon; Rho., rhombencephalon; Tel., telencephalon. Scale bars, 100 mm (a), 5 mm (b,c,h–j) and 1 mm (d–g). Specimen photos were taken by A.S.H.

Tametara mirim gen. et sp. nov.

Diagnosis. Tametara mirim can be distinguished from all other snakes based on the following combination of characters: postfrontal present but parietal (posterior) process absent*; parietal with posteromedial process present*; supraoccipital with sagittal crest, posterolaterally projecting nuchal crests*, well-developed anterolateral processes* and strongly overlapped by the parietal dorsally; otoccipitals not contacting each other medially (separated by posterior process of supraoccipital); quadrates with quadrate conch, suprastapedial process and pterygoid lappet; posterior surangular foramen present; precloacal vertebrae with well-developed and ventrolaterally oriented ...

Etymology. Tametara, meaning ‘adorned’ (referring to the pronounced sagittal crest of the holotype); mirim, meaning small-sized, in the native Brazilian, Tupí-Guaraní language.

Holotype. MPM 420 (Museu de Paleontologia de Marília, Marília, State of São Paulo, Brazil). Posterior half of a 3D-preserved skull and mandibles articulated with the anterior portion of the postcranium, including 103 presacral vertebrae.

Locality and age. The fossil was discovered by W.R.N. and G.M.X.P. in 2020, in William’s Quarry 2 at Sítio Paleontológico ‘José Martin Suárez’ (Presidente Prudente municipality, State of São Paulo, Brazil); Adamantina Formation, Bauru Group, Bauru Basin, late Santonian to early Campanian age (approximately 85–75 million years ago (Ma))22.

 

Tiago R. Simões, Gabriela Sobral, Simone Macrì, Roy Ebel, Thiago S. Fachini, Agustín G. Martinelli, William R. Nava, Giovanna M. X. Paixão, Luis M. Chiappe, Nicolas Di-Poï and Annie S. Hsiou. 2026. Exceptional Brain and Ecological Diversity in the earliest Snakes. Nature. DOI: doi.org/10.1038/s41586-026-10809-9 [22 July 2026]

[Herpetology • 2026] Allobates tanaru • The First Chlorotic Species of the Superfamily Dendrobatoidea: A New Nurse Frog of the Allobates albiventris Complex (Anura: Aromobatidae) with remarkably greenish hatchlings from Brazilian Amazonia

 Allobates tanaru 

Dantas, Ferrão, Cunha-Machado & Lima, 2026

 DOI: doi.org/10.3099/0006-9698-579.1.1

 Abstract -

While many frogs around the world have blue-green tissues because of the accumulation of a pigment called biliverdin, this had never been observed in nurse or poison frogs until now. In this study, we describe a new species of nurse frog from southwestern Amazonia that breaks new ground in Neotropical amphibian taxonomy: It is the first chlorotic species—with greenish hatchlings—ever recorded in the large superfamily Dendrobatoidea. Previously lumped within Allobates albiventris, integrative taxonomy reveals it as a distinct species, supported by a set of morphological and bioacoustic traits. It differs from most of its congeners by a call consisting of a pair of notes emitted in a single exhalation; males with lateral expansions on fingers II and III, and a white vocal sac covered with melanophores; dark brown oocytes, hatchlings with greenish yolk, and tadpoles with two or three short, pyramidal papillae distributed in a single row on each lateral margin of the anterior lip. Beyond its diagnostic features, this discovery is notable because chlorotic tissues were previously unknown in Dendrobatoidea, a superfamily with more than 350 species known for its terrestrial habitat, territoriality, carrying behavior, and nonchlorotic adults. The distinctive greenish hue seen in embryos of certain species, particularly in the new Allobates, may serve as an adaptation for predator avoidance, and it also highlights the ecological plasticity and morphological diversity within the genus. This opens fresh avenues to study the ecological, evolutionary, and developmental significance of biliverdin in frogs using a lineage wherein the biology contrasts with classic model species.

KEYWORDS: biodiversity, chlorosis, Integrative taxonomy, Madeira River, new species, species delimitation

Color in life of adults of Allobates tanaru sp. nov.
(A–C) Female, INPA-H 45548, SVL 17.4 mm. (D–F) Female, MPEG 45484, SVL 17.5 mm.
(G, I) Male, INPA-H 45552, SVL 17.0 mm. (H) Female, INPA-H 45549, SVL 16.9 mm.
(J–L) Male, INPA-H 45554, SVL 15.8 mm.

Allobates tanaru sp. nov. Dantas, Ferrão & Lima

  

Etymology: The specific epithet tanaru is a noun in apposition and honors the indigenous Tanaru, known in Portuguese as Índio Tanaru and Índio do Buraco (Indigenous Tanaru and Indigenous of the Hole, respectively). Tanaru died on 23 August 2022; he was the last representative individual of a poorly known ethnic group that lived in Rondônia, Brazil. His people were exterminated by gunmen at the behest of illegal loggers in 1995. After that, Tanaru lived isolated for almost 30 years in the Tanaru Indigenous Land, located in the southeast Rondônia, approximately 700 km from Rondônia's capital. Because the Tanaru Indigenous Land does not have a consolidated land demarcation and is surrounded by agricultural farms, the land suffers continuous threats and attacks, some of which started just some days after Tanaru's death. The indigenous Txai Suruí, from the Suruí ethnic group, said: “Known for his solitude, Tanaru resisted the contact with non-indigenous people until his last days after so much trauma and violence. His territory must continue to represent resistance and must be preserved and cared for, becoming a permanent conservation area.”

Vernacular names: Tanaru's nurse frog (English),
Rana Cuidadora de Tanaru (Spanish),
Rãzinha Cuidadora do Tanaru (Portuguese).

Diagnosis: A nurse frog Allobates characterized by the following combination of characters. Small-bodied species, SVL 14.1–17.0 mm (n = 18) in males and 16.9–18.2 mm (n = 9) in females; granular dorsal skin; one subarticular tubercle on finger IV; tip of finger IV reaches the distal phalanx of finger III; cream dorsum with contrasting brown marks; dorsolateral stripe present; conspicuous ventrolateral line absent; translucent-white vocal sac; white ventral surface in males; white chest and belly in females; and dorsal surface of fingers brown. Advertisement calls characterized by the emission of two notes in a single exhalation; with a call duration of 64 ± 4 ms (57–69 ms); first note (18 ± 2 ms; 16–22 ms) shorter than the second (27 ± 2 ms; 24–32 ms); an intercall interval of 275 ± 24 ms (220–309 ms); an intercall-series interval 854 ± 123 ms (645–1,118 ms); and a dominant frequency of 5,518 ± 200 Hz (5,168–5,879 Hz). Hatchlings with greenish yolk. Exotrophic tadpoles with an oral disc; labial keratodont row formula 2(2)/3(1); 13–15 pyramidal and cylindrical papillae on posterior labium; three pyramidal papillae at each end of the posterior labium; cylindrical papillae on the central portion of posterior labium; posterior labium length formulae P-I = P-II > P-III; and light-brown melanophores on tail and fins not forming blotches or spots.

Coloration of freshly laid eggs (A), embryos (B), and hatchlings (C) of  Allobates tanaru sp. nov.

 

 

Silionamã Pereira Dantas, Miquéias Ferrão, Antônio Saulo Cunha-Machado and Albertina Pimentel Lima. 2026. The First Chlorotic Species of the Superfamily Dendrobatoidea: A New Nurse Frog of the Allobates albiventris Complex (Anura, Aromobatidae) with remarkably greenish hatchlings from Brazilian Amazonia. Breviora. 579 (1), 1-35. DOI: doi.org/10.3099/0006-9698-579.1.1 (8 July 2026) 

[Paleontology • 2026] New Fossil unveils the Dentary Anatomy of the rare lepidosauromorph Cargninia enigmatica from the Upper Triassic of Southern Brazil

 Cargninia enigmatica Bonaparte, Schultz, Soares & Martinelli, 2010, 

in Damke, Dalle-Laste,  Kerber, Roberto-da-Silva et Müller, 2026. 

DOI: doi.org/10.1002/ar.70268

Artwork by Márcio L. Castro.

Abstract

Nowadays, Lepidosauria is a diverse group represented by squamates and the rhynchocephalian tuatara. However, their origins date back to the end of the Permian Period, when the stem lineages Lepidosauromorpha and Archosauromorpha diverged. Within the lepidosauromorph stem lineage, a few species have been described with unstable phylogenetic placements. In Brazilian strata, the only representative of this lineage is the rare species Cargninia enigmatica. The taxon was found in Norian beds (upper portion of the Candelária Sequence) and is known from the posterior end of a dentary and a tentatively referred partial maxilla. Here, we describe a new specimen (CAPPA/UFSM 0519) referred to Cargninia enigmatica, consisting of a partial dentary recovered from the type locality. The specimen provides new anatomical information on the anterior portion of the dentary. In addition, for the first time, the phylogenetic placement of Cargninia enigmatica was investigated in a computational framework, and the results are congruent with previous suggestions that it represents a non-lepidosaur lepidosauromorph. Finally, the new specimen reveals details of the anatomy of the mandibular ramus of the trigeminal nerve, demonstrating that it shares a similar condition with its extant relatives.

Keywords: Caturrita Formation, Gondwana, Lepidosauromorpha, Norian, Pangea

Left dentary of CAPPA/UFSM 0519 in lateral view. (a) Photograph. (b) Interpretative drawing. (c) Detail of the rostralmost preserved teeth. (d) Additional details of the second and third preserved teeth. fo, foramina.

SYSTEMATIC PALEONTOLOGY

DIAPSIDA Osborn, 1903

SAURIA Macartney, 1802

LEPIDOSAUROMORPHA Gauthier, 1984 (sensu Gauthier et al., 1988)

Cargninia enigmatica Bonaparte et al., 2010

 Holotype: UFRGS-PV-1027-T, posterior end of a left dentary with five preserved teeth.

 Type locality, age, and horizon: Linha São Luiz site (29°33′45″S, 53°26′48″W), municipality of Faxinal do Soturno, Rio Grande do Sul, Brazil. Candelária Sequence of the Santa Maria Supersequence (Horn et al., 2014; Zerfass et al., 2003). These layers are early Norian in age (225.42 ± 0.37) (Langer et al., 2018).

New referred material: CAPPA/UFSM 0519, partial left dentary with several teeth. The specimen was collected from the type locality.

  Amended diagnosis: In addition to the unique traits of Cargninia enigmatica listed by Bonaparte et al. (2010) and Romo de Vivar et al. (2020), we recognize the following additional features based on the study of CAPPA/UFSM 0519 that distinguish the species from closely related taxa: the symphyseal region is medially recurved and formed by the Meckelian groove, and the presence of foramina restricted to the anterior region of the dentary.

A landscape from the Late Triassic of southern Brazil showing Cargninia enigmatica being observed by the sauropodomorph dinosaur Macrocollum itaquii. Artwork by Márcio L. Castro.

Lísie Vitória Soares Damke, Vitória Zanchett Dalle-Laste, Leonardo Kerber, Lúcio Roberto-da-Silva and Rodrigo Temp Müller. 2026. New Fossil unveils the Dentary Anatomy of the rare lepidosauromorph Cargninia enigmatica from the Upper Triassic of Southern Brazil. The Anatomical Record. DOI: doi.org/10.1002/ar.70268  [04 July 2026]

[Herpetology • 2026] Dendropsophus liliae • A New Species of Dendropsophus (Anura: Hylidae) of the D. ruschii group from the Atlantic Forest in Serra da Mantiqueira, Minas Gerais, Brazil

Dendropsophus liliae

Santana, Shepard, Carvalho, Müller, Assis & Feio, 2026 

 DOI: doi.org/10.1371/journal.pone.0351087 

 

Abstract

The Dendropsophus ruschii species group currently comprises two species with disjunct distributions between the Atlantic Forest and the Amazon. Based on an integrative approach combining morphological, acoustic, and molecular data (mtDNA barcoding), we describe a new species from the Serra da Mantiqueira, Minas Gerais, Brazil. Dendropsophus liliae sp. nov. is diagnosed by its small size, rounded digital discs, presence of a calcar appendage, dark red iris, and a distinct white stripe from the snout to the upper eyelid. This discovery expands the known diversity of the group and represents its most inland record within the Atlantic Forest.

Live specimens of Dendropsophus liliae sp. nov. from Serra do Brigadeiro (type locality).
 (A) Holotype adult male (MZUFV20707), (B) paratype adult male (ZUFMS-AMP7816), (C–F) unvouchered adult males.

Photographs by D.J. Santana (A–B) and C.L. Assis (C–F).

Published under a CC BY 4.0 license.

Dendropsophus liliae sp. nov.  

   

Diagnosis.—We assigned the new species to the genus Dendropsophus and to the D. ruschii species group based on phylogenetic results (see Results below). In addition, the new species morphologically resembles other species of the D. ruschii group, especially D. ruschii, which exhibit white marks on the head and flanks. Dendropsophus liliae sp. nov. can be distinguished from its congeners within the D. ruschii group by the combination of the following features: (1) small size, adult males 16.0–19.5 mm SVL; (2) dominant frequency of the advertisement call from 6030 to 6630 Hz; (3) rounded discs on fingers and toes; (4) presence of sparse small granules on the dorsum; (5) presence of a calcar appendage; (6) eyes dark red; (7) overall dorsal coloration brown; (8) nuptial pad poorly developed; (9) wide head HW/SVL = 0.30–0.34; (10) a well-marked white line running from the posterior edge of the upper eyelid to the tip of the snout.

Etymology.— The specific epithet liliae is a patronym honoring Prof. Lília Maria Fraga Tostes (in memoriam) for her extensive contributions to biology education, her friendship, and her mentorship of DJS during his undergraduate studies. Prof. Lília, affectionately known as “Lilinha,” was a dear friend and a charismatic teacher widely known by the citizens of Muriaé, Minas Gerais (the hometown of DJS). Her kindness and charisma inspired many students to pursue careers in the biological sciences, and several of her former students are now professors who continue to carry her lessons forward.

 

Diego J. Santana, Donald B. Shepard, Priscila S. Carvalho, Márcia M. P. Müller, Clodoaldo L. Assis and Renato N. Feio. 2026. A New Species of Dendropsophus (Anura, Hylidae) of the D. ruschii group from the Atlantic Forest in Serra da Mantiqueira, Minas Gerais, Brazil. PLoS One. 21(6): e0351087. DOI: doi.org/10.1371/journal.pone.0351087 [June 23, 2026]

[Botany • 2026] Sinningia pampeana (Gesneriaceae) • A New Species from the Pampa's rocky outcrops in southern Brazil and Uruguay

 

Sinningia pampeana G.E.Ferreira and Chautems, 
  

in Ferreira, Spiazzi, Barbieri, Chautems et Araújo, 2026.

DOI: doi.org/10.1002/njb.05231 

Abstract

Sinningia pampeana is a new rupicolous species from the rocky outcrops of the Pampa biome in southern Brazil and Uruguay. Morphological analyses based on herbarium material, field observations, and detailed illustrations support its recognition as a distinct species from Sinningia sellovii. Sinningia pampeana is restricted to rock outcrops within the Pampa grasslands, where populations are threatened by grazing, habitat degradation, and potential mining activities. Given the current uncertainty regarding its distribution and sampling completeness, a preliminary conservation assessment of ‘Data Deficient' (DD) is proposed under IUCN criteria.

Keywords: Gesneriaceae, new species, Pampa biome, rocky outcrops, Sinningia

Sinningia pampeana sp. nov. (A) Corolla, frontal view, (B) inflorescence, detail, (C) trichome structure, (D) ovary, transverse section showing the nectary consisting of two separate dorsal glands, (E) ovary, style, and nectary, (F) calyx and corolla showing stamens, (G) coherent anthers, detail, (H) corolla throat, detail showing stamens and anthers, (I) immature capsule, (J) habit.

Drawn from Jarenkow and Garcia 3607.

Morphology of Sinningia pampeana sp. nov.
 (A) Habitat on rocky outcrop, (B) inflorescence in the shrub vegetation, (C) inflorescence, (D) habit, (E) axillary flowers, (F) close-up of the calyx and corolla.

Photo by A. Chautems.

Sinningia pampeana G.E.Ferreira and Chautems sp. nov. 

Diagnosis: Sinningia pampeana differs from S. sellovii by its consistently red, horizontally oriented corollas (versus whitish pink to lilac or yellowish and pendent corollas), included anthers (versus exserted), a slightly bilabiate limb with enlarged dorsal lobes (versus a corolla tubular with subequal lobes), and the presence of only one to ca four flowers per bract axil (versus 3–9 flowers).

Etymology: The specific epithet ‘pampeana' refers to the Pampa biome, characterized by grasslands and rocky outcrops across southern Brazil, Uruguay, and Argentina. The name derives from the Quechua word ‘pampa', meaning ‘plain' or ‘open field'.

Gabriel Emiliano Ferreira, Daniel Alves Spiazzi, Pedro Henrique Sonsim Barbieri, Alain Chautems and Andréa Onofre Araújo. 2026. Sinningia pampeana sp. nov. (Gesneriaceae) from the Pampa's rocky outcrops in southern Brazil and Uruguay. Nordic Journal of Botany. DOI: doi.org/10.1002/njb.05231 [24 June 2026]

[Botany • 2026] Microlicia almedae (Melastomataceae) • A New Species from the Chapada Diamantina, Bahia, Brazil

Microlicia almedae  R.B.Pacifico & Kriebel,

in Pacifico et Kriebel, 2026. 

DOI: doi.org/10.3897/phytokeys.276.193021

Abstract

A new species, Microlicia almedae, is described and illustrated from the species-rich campo rupestre vegetation of Chapada Diamantina, Bahia, Brazil. The taxonomic novelty is morphologically related to M. giuliettiana and M. pulchra, which are also restricted to Chapada Diamantina. Microlicia almedae differs from the latter two species in leaf shape and size, hypanthium indumentum, calyx lobe shape and size, and petal size. In addition, M. almedae differs from M. giuliettiana by its uniformly magenta petals and from M. pulchra by its capsules with deciduous columellae. Variation in leaf shape among M. almedae, M. pulchra, and M. giuliettiana was quantified using elliptic Fourier analysis, which revealed near-complete separation among the three species.

Key words: Campo rupestre, Lavoisiereae, Pico da Lapa Grande, Serra do Barbado, taxonomy

Microlicia almedae.
 A. Habit; B. Flower; C. Landscape with campo rupestre vegetation at Serra do Barbado, the type locality of M. almedae.

Voucher: L. Daneu et al. 796 (JABU). 

Photos: by L. Daneu (A, B); by E.A. Ramos (C).

Microlicia almedae.
A. Habit; B. Close-up of a branch; C. Leaf adaxial surface; D. Leaf abaxial surface; E. Detail of glandular-punctate adaxial surface; F. Detail of glandular-punctate indumentum on abaxial surface; G. Flower in lateral view; H. Flowering hypanthium and calyx lobes; I. Detail of the indumentum on the hypanthium; J. Petal in adaxial view; K. Antepetalous (left) and antesepalous (right) stamens; L. Gynoecium; M. Apex of style and stigma; N. Ovary in cross-section; O. Capsule enveloped by the hypanthium and calyx lobes; P. Seed in lateral view.

Illustration by Klei Sousa based on L. Daneu et al. 796 (JABU).

  

Microlicia almedae R.B.Pacifico & Kriebel, sp. nov.

Ricardo Pacifico and Ricardo Kriebel. 2026. Microlicia almedae (Melastomataceae), A New Species from the Chapada Diamantina, Bahia, Brazil. PhytoKeys. 276: 183-195. DOI: doi.org/10.3897/phytokeys.276.193021 [12 Jun 2026]

 

[Paleontology • 2026] Eschatornis aterradora • A New terror bird (Cariamiformes: Phorusrhacidae) from the Late Pleistocene of Brazil: insights into the last representatives of the family

Eschatornis aterradora 

Machado, Vasconcelos, Santos, Dutra, Cartelle, Câmara, Dantas & Degrange, 2026

DOI: doi.org/10.1002/spp2.70080  

 x.com/ThePalAss

Abstract

Terror birds comprise an iconic group of apex predator birds from America, with a rich fossil record that is one of the longest among birds for a Neoaves family, ranging from the middle Eocene to the latest Pleistocene. Here, we report the discovery of a new genus and species of Phorusrhacidae, based on an incomplete tibiotarsus recovered from an Upper Pleistocene (25 326–25 733 cal yr BP) cave deposit in Bahia, northeastern Brazil, and previously interpreted as a New World vulture. The preserved morphology exhibits unique diagnostic features that support the recognition of a new species belonging to the small-size phorusrhacids, the Psilopterinae, a clade that probably had poor flying abilities. In addition to the systematic assignment, we discuss aspects of its palaeoecology (isotopic habitat and body mass estimate), providing new insights into the diversity and evolutionary history of the last known terror birds.

Keywords: Aves, Cariamiformes, Psilopterinae, Quaternary, Toca dos Ossos, Brazil

Eschatornis aterradora 

Victor Hugo M. Machado, Marcelo F. de Vasconcelos, Luciano Vilaboim Santos, Rodrigo Parisi Dutra, Cástor Cartelle, Bruno G. O. Câmara, Mário A. T. Dantas and Federico J. Degrange. 2026. A New terror bird (Cariamiformes, Phorusrhacidae) from the Late Pleistocene of Brazil: insights into the last representatives of the family. Papers in Palaeontology. 12(2); e70080. DOI: doi.org/10.1002/spp2.70080 [26 March 2026] 

 x.com/ThePalAss/status/2037584625766117793

 instagram.com/zeinner.paula 

[Paleontology • 2026] Silescelida acristata • A New eucrocopodan Archosauriform from the Middle Triassic of southern Brazil and the Phylogeny of Euparkeriidae

Silescelida acristata 

Garcia, Cerqueira, Battista,  Andrade & Müller, 2026

DOI: doi.org/10.1038/s41598-026-53740-9 

life reconstruction by Matheus Fernandes Gadelha. 

Abstract

Archosauriformes comprise a diverse range of reptiles, including the crown-group Archosauria, which flourished during the Triassic Period. Early-diverging archosauriforms, such as proterosuchids and erythrosuchids, are becoming progressively well-known due to recent studies and consistently resolve at the base of the clade. More crownward, Eucrocopoda includes archosauriform taxa that increasingly approximate the ancestral archosaur body plan. Early-diverging eucrocopodan archosauriforms have a widespread paleogeographic record but remain poorly understood in terms of ingroup relationships. Within this radiation, Euparkeriidae is particularly challenging, because its ingroup composition and monophyly is debated, with some authors supporting a non-monospecific Euparkeriidae, whereas others fail to recover this hypothesis. The eponymous Euparkeria capensis is known from the Early to Middle Triassic of South Africa, whereas other putative euparkeriids are primarily known from the Early to Middle Triassic of China, Germany, Poland, and Russia. Here, we describe a new early-diverging eucrocopodan (Silescelida acristata gen. et sp. nov.) from the Middle Triassic of southern Brazil. Phylogenetic analyses incorporating this taxon suggest a possible placement within Euparkeriidae, though its position shows instability depending on the operational taxonomic units considered, especially among other putative euparkeriids. This discovery not only informs on the temporal and paleogeographic distribution of euparkeriids but also sheds light on the origin and early evolution of eucrocopodans, representing the first record of this archosauriform grade in the Triassic of Brazil. More broadly, the new taxon underscores the significance of South American Triassic deposits within the evolutionary history of archosauriforms.

Archosauromorpha von Huene, 1946 sensu Gauthier, 2020

Archosauriformes Gauthier et al., 1988 sensu Gauthier, 2020 

Eucrocopoda Ezcurra, 2016

cf. Euparkeriidae von Huene, 1920 sensu Sookias and Butler, 2013

Provenance and material of Silescelida acristata gen. et sp. nov.
 (A) Map of the Posto site and the surface distribution of the geologic units in the area. (B) General view of the Posto site. (C) Studied specimen MCP 4186-PV (holotype of Silescelida acristata gen. et sp. nov.) showing association between its elements prior to mechanical preparation.
(D) Silhouette and preserved skeletal elements (not to scale) of Silescelida acristata gen. et sp. nov. (ilium reversed).

Abbreviations: fe, femur; il, ilium; sc, scapula. Silhouette and life reconstruction of Silescelida acristata gen. et sp. nov. by Matheus Fernandes Gadelha. Map was generated with GIMP 3.0 (gimp.org) based on the geological map of Rio Grande do Sul (https://rigeo.sgb.gov.br/bitstream/doc/10301/2/Geologico_MDT.pdf).

Silescelida acristata gen. et sp. nov.  

Holotype. MCP 4186-PV, a left scapula, a right ilium, and a left femur (Fig. 1C, D). The elements were found in association (attached to each other) and are size-compatible; therefore, they are considered to belong to the same individual.

Type locality, age, and horizon. Posto (or Posto de Gasolina; Fogliarini) site (29°37’38.9”S 53°22’06.5”W), municipality of Dona Francisca, Rio Grande do Sul, Brazil (Fig. 1A, B). Dinodontosaurus AZ of the Pinheiros-Chiniquá Sequence of the Santa Maria Supersequence, Paraná Basin51,52. It is considered Ladinian in age30,35,53,54,55,56,57,58.

Diagnosis. The holotype of Silescelida acristata differs from all other known non-archosaurian archosauriforms in the following combination of traits: scapular blade without an anteroposterior constriction at its base; asymmetrical expansion of the scapular blade at its dorsal portion; straight posterior margin of the scapular blade, forming a right angle with the dorsal margin of the glenoid; elliptical tuber for the m. triceps dorsal to the glenoid; dorsal margin of the dorsal iliac blade straight in dorsal and lateral views; dorsal iliac blade as deep as the acetabulum; notch between the ischiadic peduncle and the ventral apex of the medial acetabular wall; medially expanded femoral head; absence of a longitudinal groove on the proximal surface of the femoral head; posteromedial tuber as the only well-developed tuber on the femoral head; absence of an elevated mound or crest-like structure as the attachment site for the m. caudofemoralis (local autapomorphy); extensor fossa on the anterior surface of the femoral distal end; distal femoral condyles with the same degree of ventral development (not uneven).

Etymology. The generic name combines the Latin siles (“silence”) and the Greek skelēs (“hind leg”), referencing the loss of the proximal femur bearing the specimen’s collection code, which obscured its provenance until its recent rediscovery. The specific epithet derives from the Latin prefix a- (“without”) and cristāta (“crested”), referring to the absence of a crest or flange attachment site for the m. caudofemoralis (= fourth trochanter), a diagnostic feature of the taxon.

Silescelida acristata gen. et sp. nov. life reconstruction.

 Artwork by Matheus Fernandes Gadelha. 

Biogeography of early-diverging eucrocopodans and paleoart depicting Silescelida acristata gen. et sp. nov. in life.
 (A) Triassic world map depicting the paleogeographic distribution of early-diverging eucrocopods. Classification is based on the phylogenetic analyses in this contribution. Silhouettes (not to scale) based on the skeletal reconstruction of Euparkeria capensis by Demuth et al.83. Dorosuchus neoetus is based on the type-series and Osmolskina czatkowicensis is based on the holotype.
(B) Silescelida acristata gen. et sp. nov. life reconstruction. Artwork by Matheus Fernandes Gadelha. Map was generated with GIMP 3.0 (gimp.org) based on The Paleobiology Database (paleobiodb.org).

 

Maurício S. Garcia, Gabriela M. Cerqueira, Francesco Battista, Marco B. de Andrade and Rodrigo T. Müller. 2026. A New eucrocopodan Archosauriform from the Middle Triassic of southern Brazil and the Phylogeny of Euparkeriidae. Scientific Reports. 16: 16585. DOI: doi.org/10.1038/s41598-026-53740-9  [10 June 2026]

 

[Ichthyology • 2026] Leptorhamdia kamilai • Phylogenetic Placement and Description of A New Species of Leptorhamdia (Siluriformes: Heptapteridae) from the Amazon Basin

Leptorhamdia kamilai

Silva, Reia, Souza, Ywamoto & Oliveira, 2026

 

 DOI: doi.org/10.1590/1982-0224-2025-0037  

 

Abstract

Brachyglaniini is a recently described tribe of Heptapterinae, composed of four genera: Brachyglanis, Gladioglanis, Leptorhamdia, and Myoglanis. Expeditions to the Aripuanã and Tapajós River basins revealed an undescribed species of Brachyglaniini, characterized by a conspicuous light-colored band posterior to the head. Our phylogenetic results provide strong evidence that this new Brachyglaniini species belongs to the genus Leptorhamdia and is closely related to L. marmorata and L. aspredinoides. In addition to the color pattern, the new species can be distinguished from its congeners by having 19-22 anal-fin rays and 47 vertebrae.

Keywords: Brazilian shield; Catfish; Integrative taxonomy; Systematics

 Leptorhamdia kamilai
Left column: holotype, DZSJRP 16293, 92.4 mm SL.
Right column: paratypes, LBP 30639, from top to bottom: 66.3 mm SL; 47.8 mm SL; 31.4 mm SL.

Live specimens of Leptorhamdia kamilai, paratype, LBP 30639, 66.3 mm SL. Photographed by Eric V. Ywamoto. 
 Habitat: rio dos Patos, tributary of the upper Arinos River in Tapajós River basin.

Leptorhamdia kamilai, new species

 Diagnosis. Leptorhamdia kamilai can be readily distinguished among its congeners by having a conspicuous light collar-band, yellowish in live specimens, posterior to the head (vs. coloration uniformly throughout body and head, lacking any distinctive bar). Additionally, L. kamilai differs from its congeners by having 19-22 anal-fin rays (vs. 17 in L. essequibensis; 15 in L. marmorata; 32-35 in L. aspredinoides; 12 in L. nocturna, 15-16 in L. schultzi) and by having 46-47 vertebrae (vs. 45 in L. essequibensis; 43 in L.marmorata; 38 in L. nocturna; 56-57 vertebrae in L. aspredinoides and 43 vertebrae in L. schultzi).

Etymology. The specific name, kamilai, honors our dear friend Dr. Kamila Mayumi Duarte Kuabara, an entomologist and lab manager of the Ornithology Department at The Academy of Natural Sciences of Drexel University. A noun in a genitive case.

Gabriel de S. C. Silva, Lais Reia, Camila S. Souza, Eric V. Ywamoto and Claudio Oliveira. 2026. Phylogenetic Placement and Description of A New Species of Leptorhamdia (Siluriformes: Heptapteridae) from the Amazon Basin. Neotrop. ichthyol. 24 (01); DOI: doi.org/10.1590/1982-0224-2025-0037