怀特
自同构
白垩纪
动物群
分类单元
古生物学
属
后颅
生物扩散
生物
生态学
考古
地理
人口
系统发育学
人口学
社会学
基因
生物化学
作者
Stuart Pond,Scott R. Strachan,Thomas J. Raven,Martin I. Simpson,Kirsty Morgan,Susannah C. R. Maidment
标识
DOI:10.1080/14772019.2023.2210577
摘要
The Wealden Group of southern England was deposited by rivers, on floodplains and in lagoons during the Early Cretaceous. Two historically significant ankylosaurs, Polacanthus and Hylaeosaurus, are currently known from its deposits; Hylaeosaurus from the ‘lower Wealden fauna’ and Polacanthus from the ‘upper Wealden fauna’. Here, we describe a new genus and species of ankylosaur from the Wessex Formation of the Isle of Wight, which is characterized by numerous postcranial autapomorphies. Vectipelta barretti gen. et sp. nov. is 6–8 million years older than Polacanthus, and at least 3 million years younger than Hylaeosaurus, suggesting a more complicated pattern of faunal turnover in the Wealden Group than previously realized. Vectipelta does not appear to be closely related to either of the other Wealden taxa, but instead is found in a clade with two Chinese ankylosaurs, suggesting a complex pattern of dispersal to and from Europe, North America and Asia during the Early Cretaceous. The historic practise of cataloguing all ankylosaur material from the Wessex Formation as ‘Polacanthus’ has potentially prevented a diversity of taxa from being discovered, and new and existing material in museum collections should be re-appraised using an autapomorphy-driven approach.http://zoobank.org/urn:lsid:zoobank.org:pub:0B19B56E-971D-4316-A92C-FC9AB29BBC38
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