Tuesday, November 14, 2017

[Paleontology • 2017] Brontopodus plagnensis • The Dinosaur Tracksite of Plagne (early Tithonian, Late Jurassic; Jura Mountains, France): The Longest Known Sauropod Trackway


 Brontopodus plagnensis 
Mazin, Hantzpergue & Olivier, 2017

Abstract
The trackway of a huge sauropod, and the longest sauropod trackway currently known, reaching 155 m in length, has been excavated in Eastern France, alongside a shorter theropod trackway. They have been precisely dated to the early Tithonian (Late Jurassic), when the trackway site was located at the southeastern margin of the carbonate-dominated Jura platform, in a protected littoral mudflat environment. The footprints are preserved to various degrees along the trackways, depending on the initial condition of the sediment of various competences. The best-preserved section of the sauropod trackway allows this specimen to be attributed to Brontopodus plagnensis nov. isp. This new trackway site, alongside other Early Jurassic Swiss and French tracksites yielding thousands of sauropod and theropod tracks, can be considered as being the largest dinosaur megatracksite in Europe.

Keywords: Sauropod, Theropod, Trackway, Early Tithonian, Jura, France


The sauropod trackway, Brontopodus plagnensis
photo: P. Dumas 

Sauropoda Marsh, 1878
Titanosauriformes Salgado, Coria & Calvo, 1997

Ichnogenus Brontopodus Farlow, Pittman & Hawthorne, 1989

Brontopodus plagnensis nov. isp.


Derivation of the name: from the village of Plagne (Department of the Ain, Jura Mountains, Eastern France).

Horizon: Late Jurassic, early Tithonian, Gigas Zone, Gravesiana Subzone.

Plagne sauropod superimposed on its tracks.

Drawing: A. Bénéteau; photo: Dinojura.

 Jean-Michel Mazin, Pierre Hantzpergue and Nicolas Olivier. 2017. The Dinosaur Tracksite of Plagne (early Tithonian, Late Jurassic; Jura Mountains, France): The Longest Known Sauropod Trackway. Geobios. 50(4); 279-301.  DOI: 10.1016/j.geobios.2017.06.004

World's longest sauropod dinosaur trackway brought to light  2.cnrs.fr/en/3023.htm
World's longest sauropod dinosaur trackway brought to light http://phy.so/429864776 via @physorg_com


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