New spinosaurids from the Wessex Formation (Early Cretaceous, UK) and the European origins of Spinosauridae.
New spinosaurids from the Wessex Formation (Early Cretaceous, UK) and the European origins of Spinosauridae.
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DOI：
10.1038/s41598-021-97870-8
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发表时间：
2021-09-29
影响因子：
4.6
通讯作者：
Gostling NJ
中科院分区：
文献类型：
--
作者：
Barker CT;Hone DWE;Naish D;Cau A;Lockwood JAF;Foster B;Clarkin CE;Schneider P;Gostling NJ
棘龙科是最具特色但知之甚少的大型兽脚亚目恐龙之一，这种情况因其大多数零碎的化石记录和关于其古生物学的竞争观点而加剧。在这里，我们报告了两个新的早白垩世棘龙类标本的威塞克斯组（巴雷姆阶）的怀特岛。大规模的系统发育分析，使用简约和贝叶斯技术恢复一个新的分支内Baryonychinae，也包括非洲棘龙科Suchomimus的hypodigm对。这两个标本代表不同的和新的类群，在此命名Ceratosuchops inferodios gen. et sp. nov.和Riparovenator milnerae gen. et sp. nov.一个古地理重建表明欧洲起源棘龙科，至少有两个分散到非洲的事件。这些新的发现提供了可喜的信息采样差的地区棘龙类解剖，表明共域是目前和潜在的共同在baryonychines和棘龙类作为一个整体，并有助于更新的古生物地理重建的分支。
Spinosaurids are among the most distinctive and yet poorly-known of large-bodied theropod dinosaurs, a situation exacerbated by their mostly fragmentary fossil record and competing views regarding their palaeobiology. Here, we report two new Early Cretaceous spinosaurid specimens from the Wessex Formation (Barremian) of the Isle of Wight. Large-scale phylogenetic analyses using parsimony and Bayesian techniques recover the pair in a new clade within Baryonychinae that also includes the hypodigm of the African spinosaurid Suchomimus. Both specimens represent distinct and novel taxa, herein named Ceratosuchops inferodios gen. et sp. nov. and Riparovenator milnerae gen. et sp. nov. A palaeogeographic reconstruction suggests a European origin for Spinosauridae, with at least two dispersal events into Africa. These new finds provide welcome information on poorly sampled areas of spinosaurid anatomy, suggest that sympatry was present and potentially common in baryonychines and spinosaurids as a whole, and contribute to updated palaeobiogeographic reconstructions for the clade.
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影响因子：
1.1
作者：
Cau, Andrea
通讯作者：
Cau, Andrea
影响因子：
2.7
作者：
Dal Sasso, Cristiano;Maganuco, Simone;Cau, Andrea
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Cau, Andrea
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作者：
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Benson, Roger B. J.;Brusatte, Stephen L.;Naish, Darren
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影响因子：
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作者：
Carr, Thomas D.
通讯作者：
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