| Osteopygis Temporal range: Late Cretaceous – Eocene,
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|---|---|
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| Osteopygis emarginatus carapace | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Pantestudines |
| Clade: | Testudinata |
| Family: | †Macrobaenidae |
| Genus: | †Osteopygis Cope, 1868 |
| Type species | |
| Osteopygis emarginatus Cope, 1868
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| Species1 | |
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Osteopygis is a genus of extinct turtle.2 Osteopygis, as traditionally seen, is a chimera: the postcrania (including the holotype) belong to a non-marine stem-cryptodire, whilst the crania belong to sea turtles. In 2005, the referred material was split between two taxa: the postcrania remained in Osteopygis, while the crania were reassigned to Euclastes wielandi.3
References
References
- Gentry, A.D.; Kiernan, C.R.; Parham, J.F. (2022). "A large non-marine turtle from the Upper Cretaceous of Alabama and a review of North American "Macrobaenids"". The Anatomical Record. doi:10.1002/ar.25054.
- "†Osteopygis Cope 1868". Paleobiology Database. Fossilworks. Retrieved 17 December 2021.
- A reassessment of the referral of sea turtle skulls to the genus Osteopygis (Late Cretaceous, New Jersey, USA)