Abstract
The earliest mammaliaforms are difficult to assess because the fossil record is poor and because their distinctive morphologies cannot be directly compared with more recent mammaliaforms. This is especially true for the haramiyid genusTheroteinus, only known in the Saint-Nicolas-de-Port locality (Rhaetian, France). This study presents a new definition of the type-speciesTheroteinus nikolai. A new speciesTheroteinus rosieriensis, sp. nov., is named and distinguished by the lingual shift of distal cusps, a larger size, and a stockier occlusal outline. Comparisons withEleutherodon,MegaconusandMillsodonsuggest thatTheroteinushas potential close relatives among the Jurassic haramiyids.
Funder
ATM ‘Biodiversité actuelle et fossile
Crises, stress, restaurations et panchronisme: le message systématique’, the ATM ‘Emergences’, and by the UMR 7207 ‘Centre de Recherche sur la Paléobiodiversité et les Paléoenvironnements’
Subject
General Agricultural and Biological Sciences,General Biochemistry, Genetics and Molecular Biology,General Medicine,General Neuroscience
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