A large Megaraptoridae (Theropoda: Coelurosauria) from Upper Cretaceous (Maastrichtian) of Patagonia, Argentina

被引：25
作者：
Aranciaga Rolando, Alexis M. [1 ]
Motta, Matias J. [1 ]
Agnolin, Federico L. [1 ,2 ]
Manabe, Makoto [3 ]
Tsuihiji, Takanobu [1 ]
Novas, Fernando E. [1 ]
机构：
[1] Consejo Nacl Invest Cient & Tecn, Museo Argentino Ciencias Nat Bernardino Rivadavia, Lab Anat Comparada & Evoluc Vertebrados, Av Angel Gallardo 470,C1405DJR, Buenos Aires, DF, Argentina
[2] Univ Maimonides, CEBBAD, Dept Ciencias Nat & Antropol, Fdn Hist Nat Felix de Azara, Hidalgo 767,C1405BDB, Buenos Aires, DF, Argentina
[3] Natl Museum Nat & Sci, 4-1-1 Amakubo, Tsukuba, Ibaraki 3050005, Japan
来源：
SCIENTIFIC REPORTS | 2022年 / 12卷 / 01期
关键词：
MAJUNGASAURUS-CRENATISSIMUS THEROPODA; SAN JORGE BASIN; TYRANNOSAUROID DINOSAUR; CARNOSAUR DINOSAURIA; EVOLUTION; SPECIMEN; AUSTRALOVENATOR; RECONSTRUCTION; ABELISAURIDAE; NAMUNHUAIQUII;
D O I：
10.1038/s41598-022-09272-z
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Megaraptora is a theropod clade known from former Gondwana landmasses and Asia. Most members of the clade are known from the Early to Late Cretaceous (Barremian-Santonian), with Maastrichtian megaraptorans known only from isolated and poorly informative remains. The aim of the present contribution is to describe a partial skeleton of a megaraptorid from Maastrichtian beds in Santa Cruz Province, Argentina. This new specimen is the most informative megaraptoran known from Maastrichtian age, and is herein described as a new taxon. Phylogenetic analysis nested the new taxon together with other South American megaraptorans in a monophyletic clade, whereas Australian and Asian members constitute successive stem groups. South American forms differ from more basal megaraptorans in several anatomical features and in being much larger and more robustly built.
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页数：29
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