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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The femoral anatomy of Pampadromaeus barberenai based on a new specimen from the Upper Triassic of Brazil

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Author(s):
Mueller, Rodrigo Temp [1] ; Langer, Max Cardoso [2] ; Cabreira, Sergio Furtado [3] ; Dias-da-Silva, Sergio [4]
Total Authors: 4
Affiliation:
[1] Univ Fed Santa Maria, Programa Pos Grad Biodiversidade Anim, BR-97119900 Santa Maria, RS - Brazil
[2] Univ Sao Paulo, Lab Paleontol Ribeirao Preto, BR-14049 Ribeirao Preto, SP - Brazil
[3] Univ Luterana Brasil, Museu Ciencias Nat, Canoas, RS - Brazil
[4] Univ Fed Santa Maria, Ctr Apoio & Pesquisa Paleontol, BR-97119900 Santa Maria, RS - Brazil
Total Affiliations: 4
Document type: Journal article
Source: HISTORICAL BIOLOGY; v. 28, n. 5, p. 656-665, JUL 3 2016.
Web of Science Citations: 8
Abstract

Femora of the holotype and only previously known specimen of the early sauropodomorph Pampadromaeus barberenai are incomplete and fractured. Here, we describe a new complete femur assigned to Pampadromaeus barberenai, quarried from the same outcrop of original type specimen: Janner' site, (Carnian of the Parana Basin). It shares with the holotype of Pampadromaeus barberenai a unique combination of features: anteromedial tuber slightly posteromedially displaced; lesser trochanter proximodistally oriented with the proximal tip gently connected to the femoral shaft; fourth trochanter located on the medial margin along the mediolateral axis of the femur and with an assymetrical outline. In addition, we propose a femoral autapomorphy for Pampadromaeus barberenai: lateral condyle of the distal end of the femur extremely reduced lateromedially. Two distinct phylogenetic analyses place the new specimen as the sister-group of the Pampadromaeus barberenai type-specimen and, in one of them, they are nested within Sauropodomorpha, corroborating the original description and taxonomic assignation. (AU)

FAPESP's process: 14/03825-3 - The origin and rise of dinosaurs in Gondwana (late Triassic - early Jurassic)
Grantee:Max Cardoso Langer
Support Opportunities: Research Projects - Thematic Grants