Taxonomic reassessment of Clevosaurus latidens Fraser, 1993 (Lepidosauria, Rhynchocephalia) and rhynchocephalian Phylogeny based on Parsimony and Bayesian inference
Taxonomic reassessment of Clevosaurus latidens Fraser, 1993 (Lepidosauria, Rhynchocephalia) and rhynchocephalian Phylogeny based on Parsimony and Bayesian inference
复制标题
基于简洁性和贝叶斯推理的 Clevosaurus latidens Fraser 的分类学重新评估，1993（鳞龙目、喙头目）和喙头类系统发育
DOI：
10.1017/jpa.2017.136
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发表时间：
2018
影响因子：
1.4
通讯作者：
M. Benton
中科院分区：
文献类型：
--
作者：
Jorge A. Herrera‐Flores;Thomas L. Stubbs;Armin Elsler;M. Benton
抽象的。
晚三叠世喙头类宽齿龙（英语：Rhynchocephalian Latidens Fraser，1993）发现于英国克罗姆霍尔采石场（英语：Cromhall Quarry）的裂隙沉积物中。许多研究质疑它被归为龙属，一些系统发育分析表明它与食草的喙头类有着密切的关系。对模式标本和参考材料进行了重新鉴定。latidens以阐明其分类身份。此外，我们提供了新的系统发育分析的Rhynchocephalia使用简约和贝叶斯方法。我们的分类学回顾和系统发育分析表明，C。宽齿龙不属于龙类，而是一个新的属。我们重新评估C。并为Fraserosphenodon新属提供了修正的诊断。简约性和贝叶斯分析都恢复了类似的拓扑结构，我们为喙头动物内的两个更高分支提出了正式名称：Eusphenodontia new infraorder和Neosphenodontia new clade。
Abstract.
The Late Triassic rhynchocephalian Clevosaurus latidens Fraser, 1993 is known from the fissure deposits of Cromhall Quarry, England. Many studies have questioned its referral to the genus Clevosaurus Swinton, 1939 and some phylogenetic analyses suggest a close relationship with herbivorous rhynchocephalians. We re-examine the type specimens and referred material of C. latidens to elucidate its taxonomic identity. Additionally, we provide new phylogenetic analyses of the Rhynchocephalia using both parsimony and Bayesian approaches. Our taxonomic review and both phylogenetic analyses reveal that C. latidens is not referable to Clevosaurus, but represents a new genus. We reassess C. latidens and provide an amended diagnosis for Fraserosphenodon new genus. Both parsimony and Bayesian analyses recover similar topologies and we propose formal names for two higher clades within Rhynchocephalia: Eusphenodontia new infraorder and Neosphenodontia new clade.