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| Talenkauen santacrucensis
Novas, Cambiaso & Ambrioso, 2004
in Rozadilla, Agnolín & Novas, 2019.
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Abstract
Talenkauen santacrucensis represents one of the most complete South American ornithopods yet discovered. This dinosaur comes from the Mata Amarilla Formation (Turonian) of Santa Cruz Province, Argentina. The aim of this contribution is to present a detailed description of Talenkauen santacrucensis. Features of the cervical series of Talenkauen, which are shared with other elasmarians, indicate that these dinosaurs have a proportionally longer neck than other ornithopods. These traits were convergently acquired by several saurischian clades. Additionally, some features, including an ornamented labial surface of the mandibular teeth and a sigmoidal greater trochanter of femur, are traits shared by most elasmarians, and may prove to be synapomorphies of this clade. A phylogenetic analysis recovers most Cretaceous Gondwanan ornithopods in the clade Elasmaria. This analysis indicates that Elasmaria was distributed more widely geographically and temporally than previously thought.
Keywords: Ornithopoda, Euiguanodontia, Elasmaria, Talenkauen santacrucensis, Gondwana, Patagonia
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| Talenkauen santacrucensis
Illustration: Sebastián Rozadilla
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Sebastián Rozadilla, Federico Lisandro Agnolín and Fernando Emilio Novas. 2019. Osteology of the Patagonian Ornithopod Talenkauen santacrucensis (Dinosauria, Ornithischia). Journal of Systematic Palaeontology. DOI: 10.1080/14772019.2019.1582562
