Extinct genus of pancheloniid
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Prionochelys is an extinct genus of pancheloniid from the Mooreville Chalk and Eutaw Formations of Alabama. It consists of a single species, P. matutina.
Taxonomy.
"Prionochelys" was originally assigned to the family Toxochelyidae. A 2018 paper found it to be on the stem of Cheloniidae, the family to which most modern sea turtles belong, forming a monophyletic grouping with "Ctenochelys" and "Peritresius". In 2019, Gentry et al. assigned "Prionochelys" to the extinct Ctenochelyidae family. A cladogram from their analysis:
References.
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