A new look at the first dinosaur discovered in Antarctica:reappraisal of Antarctopelta oliveroi(Ankylosauria:Parankylosauria)  

作　　者：Sergio SOTO ACUÑA Alexander OVARGAS Jonatan KALUZA 

机构地区：[1]Red Paleontológica U-Chile,Departamento de Biología,Facultad de Ciencias,Universidad de Chile,Ñuñoa 7800003,Chile [2]Escuela de Geología,Facultad de Ciencias,Ingeniería y Tecnología,Universidad Mayor,Providencia,Santiago 7500994,Chile [3]Fundación de Historia Natural Félix de Azara,Universidad Maimónides,Buenos Aires C1405,Argentina [4]Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET),Buenos Aires C1425FQB,Argentina

出　　处：《Advances in Polar Science》2024年第1期78-107,共30页极地科学进展（英文版）

基　　金：supported by Núcleo Milenio EVOTEM from ANIDGobierno de Chile

摘　　要：The first dinosaur discovered in the Antarctic continent was the ankylosaur Antarctopelta oliveroi in the 1980s.Nevertheless,since then several hypotheses of phylogenetical relationships have been proposed because these have been depended on how the skeletal remains have been interpreted.The main obstacle for clarifying its phylogenetic position is that many portions of the skeleton remain unknown,in addition to the presence of unknown characters in typical ankylosaurs.Considered an ankylosaurid,nodosaurid,or even a chimaera,a recent proposal based on mostly complete material of a new ankylosaur from Chilean Patagonia provided support for a novel phylogenetic hypothesis:Antarctopelta and other southern ankylosaurs are an early branching clade,the Parankylosauria,whose origin probably dates to the Late Jurassic.In the light of this new view,a redescription of the available skeletal remains is provided together with a new reconstruction of the first Antarctic dinosaur known to the science community.

关 键 词：Antarctic Peninsula Biogeographic Weddellian Province Parankylosauria Antarctopelta 

分 类 号：Q915[天文地球—古生物学与地层学] P941.61[生物学—古生物学]