First record of caenagnathid dinosaurs (Theropoda, Oviraptorosauria) from the Cerro del Pueblo Formation (Campanian, Upper Cretaceous), Coahuila, Mexico
First record of caenagnathid dinosaurs (Theropoda, Oviraptorosauria) from the Cerro del Pueblo Formation (Campanian, Upper Cretaceous), Coahuila, Mexico
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墨西哥科阿韦拉州普韦布洛山组（坎潘阶，上白垩纪）首次记录钝吻恐龙（兽脚亚目，偷蛋龙亚目）
DOI：
10.1016/j.jsames.2022.104046
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发表时间：
2022
影响因子：
1.8
通讯作者：
Torres-Rodríguez, Esperanza
中科院分区：
文献类型：
--
作者：
Serrano-Brañas, Claudia Inés;Espinosa-Chávez, Belinda;Maccracken, S. Augusta;Guevara, Daniela Barrera;Torres-Rodríguez, Esperanza
本文报道了在墨西哥科阿韦拉上白垩纪Cerro del Pueblo （CdP）地层中发现的首个由三个部分胫骨组成的龙爪类恐龙（兽脚目，Oviraptorosauria）材料。Caenagnathids是一种不寻常的窃蛋龙兽脚亚目恐龙，主要以它们没有牙齿的喙状下颚而为人所知。属于Caenagnathidae的化石在亚洲和北美的许多晚白垩世地区都很有名，在北美中纬度地区发现了大量标本。本研究中描述的颅后材料代表了迄今为止发现的最南端的laramdian地区，并增加了在北美南部发现的少量棘骨螈化石。总的来说，这些发现强调了在CdP组发现的恐龙动物群的高度多样性。
Herein we report the first caenagnathid dinosaur (Theropoda, Oviraptorosauria) material from the Upper Cretaceous Cerro del Pueblo (CdP) Formation of Coahuila, Mexico, comprising three partial tibiae. Caenagnathids are an unusual group of oviraptorosaur theropod dinosaurs mostly known by way of their toothless, beak-like jaws. Fossils ascribed to Caenagnathidae are well-known from many Late Cretaceous localities in Asia and North America, with a high number of specimens found in the mid-latitudes of North America. The postcranial material described in this study represents the southernmost Laramidian locality in which caenagnathids have been found to date and adds to the scant number of caenagnathid fossils found in southern North America. Overall, these discoveries underscore the high diversity of the dinosaurian fauna found in the CdP Formation.