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Youngest jalodontid shark from the Triassic of Europe and a revision of the Jalodontidae
Journal of Vertebrate Paleontology ( IF 1.6 ) Pub Date : 2021-07-23 , DOI: 10.1080/02724634.2021.1931259
Alexander O. Ivanov 1, 2 , Christopher J. Duffin 3, 4 , Martha Richter 3
Affiliation  

ABSTRACT

Phoebodont-like teeth originally described as Phoebodus brodiei and Phoebodus keuperinus from the Upper Triassic of England and Germany, respectively, are attributed to a new genus Keuperodus of the family Jalodontidae. The characteristic features of all jalodontid genera are re-examined leading to the conclusion that this group formed a separate, distinct chondrichthyan evolutionary line for which a new order, the Jalodontiformes is established. The jalodontid dentition evolved from a homodont-like type to one which was markedly heterodont.



中文翻译:

来自欧洲三叠纪最年轻的jalodontid鲨鱼和Jalodontidae的修订版

摘要

Phoebodont-like 牙齿最初被描述为Phoebodus brodieiPhoebodus keuperinus,分别来自英国和德国的上三叠统,属于Jalodontidae科的一个新属Keuperodus。重新检查了所有jalodontid 属的特征,得出的结论是,该组形成了一个单独的、独特的软骨鱼类进化线,为此建立了一个新的目,即Jalodontiformes。jalodontid 牙列从类homodont 类型演变为一个明显的heterodont 类型。

更新日期:2021-09-15
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