First abelisaurid bone remains from the Maastrichtian Marilia Formation, Bauru Basin, Brazil

被引：57

作者：

Novas, Fernando E. ^{[1
,2
]}

Carvalho, Ismar de Souza ^{[3
]}

Ribeiro, Luiz Carlos Borges ^{[4
]}

Mendez, Ariel H. ^{[1
,5
]}

机构：

[1] Museo Argentino Ciencias Nat Bernardino Rivadavia, Lab Anat Comparada & Evoluc Vertebrados, Buenos Aires, DF, Argentina

[2] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina

[3] Univ Fed Rio de Janeiro, Dept Geol, CCMNI,IGEO, BR-21949900 Rio De Janeiro, Brazil

[4] Univ Uberaba, Fundacao Municipal Ensino Super Uberaba, Ctr Pesquisas Paleontol LI Price, Inst Formacao Educ, BR-38066005 Uberaba, MG, Brazil

[5] Agcy Nacl Promoc Cientifica & Tecnol, Buenos Aires, DF, Argentina

来源：

CRETACEOUS RESEARCH | 2008年 / 29卷 / 04期

关键词：

Theropoda; Abelisauridae; Upper Cretaceous; Marilia Formation; Brazil;

D O I：

10.1016/j.cretres.2008.01.010

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Bones of abelisaurid theropods from the Upper Cretaceous (Maastrichtian) Marilia Formation, Bauru Basin, Brazil, are here described. They are a dorsal vertebra, the distal part of a femur, and a pedal phalanx corresponding to three specimens found in different fossil sites of Uberaba County, Minas Gerais State. These specimens are the first abelisaurid bones from Uberaba County and thus verify the presence of these theropods, previously indicated only by isolated teeth. The new discoveries, together with that of the abelisaurid Pyenonentosaurus found elsewhere in the Bauru Basin, indicate that these theropods were the most common large predatory dinosaurs in South America during the Cretaceous. The assemblage of abelisaurid theropods and titanosaurid sauropods in the Maastrichtian beds of Brazil is congruent with that documented in same-aged beds of Patagonia. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：625 / 635

页数：11

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