Youngest Jalodontid Shark from the Triassic of Europe and a Revision of the Jalodontidae

Alexander O. Ivanov; Christopher J. Duffin; Martha Richter

doi:10.1080/02724634.2021.1931259

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Alexander O. Ivanovhttps://orcid.org/0000-0002-0790-2344,^1,2,* Christopher J. Duffinhttps://orcid.org/0000-0001-9838-2753,^3,4 Martha Richterhttps://orcid.org/0000-0002-9806-4816³

¹Institute of Earth Sciences, St. Petersburg State University, 29, 16 Line, St. Petersburg 199178, Russia,
²Institute of Geology and Petroleum Technology, Kazan Federal University, Kremlevskaya St. 4, Kazan 420008, Russia
³Department of Earth Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, U.K.,
⁴146 Church Hill Road, Cheam, Sutton, Surrey SM3 8NF, U.K.,

^*Corresponding author.

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.

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Alexander O. Ivanov, Christopher J. Duffin, and Martha Richter "Youngest Jalodontid Shark from the Triassic of Europe and a Revision of the Jalodontidae," Journal of Vertebrate Paleontology 41(2), (24 September 2021). https://doi.org/10.1080/02724634.2021.1931259

Received: 26 March 2021; Accepted: 7 May 2021; Published: 24 September 2021

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