Restesia corricki
Wick & Lehman, 2025
Classification: Elasmobranchii Orectolobiformes Orectolobidae
Reference of the original description
New sharks in a chondrichthyan fauna from the Upper Cretaceous Aguja Formation (lower Campanian) of West Texas support biogeographic segregation among chondrichthyans in the Western Interior. Cretaceous Research, 175, Article 106151
New sharks in a chondrichthyan fauna from the Upper Cretaceous Aguja Formation (lower Campanian) of West Texas support biogeographic segregation among chondrichthyans in the Western Interior. Cretaceous Research, 175, Article 106151
Description:
Citation: Restesia corricki Wick & Lehman, 2025: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 09/2025
Description
Original diagnosis after Wick & Lehman, 2025 [34567]: An orectolobiform shark known only from small, isolated teeth. Species of Restesia distinguished from R. americana by being slightly smaller, having more erect crowns, and having a medial cusp flanked on one side by lateral cusplets versus bilaterally flanked by rounded, non-cuspate shoulders. Differs from R. monocuspilatus in the presence of as many as three flanking cusplets on the distal shoulder (with two being the typical number) rather than invariably only one as in that taxon. Differs from similarly cuspate teeth of the orectolobiform Galagadon (Gates et al., 2019) principally by a lack of a strong ridge and/or divergent plications on the labial face of the crown that trend from the apex and typically follow the slope of the heels as in that taxon and, to a lesser degree, being more asymmetric, having much weaker labial sculpture, as well as having a third cusplet on the shoulder of some teeth.
Original diagnosis after Wick & Lehman, 2025 [34567]: An orectolobiform shark known only from small, isolated teeth. Species of Restesia distinguished from R. americana by being slightly smaller, having more erect crowns, and having a medial cusp flanked on one side by lateral cusplets versus bilaterally flanked by rounded, non-cuspate shoulders. Differs from R. monocuspilatus in the presence of as many as three flanking cusplets on the distal shoulder (with two being the typical number) rather than invariably only one as in that taxon. Differs from similarly cuspate teeth of the orectolobiform Galagadon (Gates et al., 2019) principally by a lack of a strong ridge and/or divergent plications on the labial face of the crown that trend from the apex and typically follow the slope of the heels as in that taxon and, to a lesser degree, being more asymmetric, having much weaker labial sculpture, as well as having a third cusplet on the shoulder of some teeth.
Remarks
shark-references Species-ID=17658
shark-references Species-ID=17658
References
New sharks in a chondrichthyan fauna from the Upper Cretaceous Aguja Formation (lower Campanian) of West Texas support biogeographic segregation among chondrichthyans in the Western Interior. Cretaceous Research, 175, Article 106151
DOI: 10.1016/j.cretres.2025.106151
New sharks in a chondrichthyan fauna from the Upper Cretaceous Aguja Formation (lower Campanian) of West Texas support biogeographic segregation among chondrichthyans in the Western Interior. Cretaceous Research, 175, Article 106151
DOI: 10.1016/j.cretres.2025.106151
