Pancheloniidae

Pancheloniids Temporal range: Late Cretaceous-Holocene, 73–0 Ma PreЄ Є O S D C P T J K Pg N
Green sea turtle, a species of the family Cheloniidae
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Testudines
Suborder:	Cryptodira
Clade:	Americhelydia
Superfamily:	Chelonioidea
Clade:	Pancheloniidae Joyce et al., 2004
Subgroups
See text.

Pancheloniidae is a clade of sea turtles belonging to the sea turtle superfamily Chelonioidea.^[1] It is defined as all turtles more closely related to cheloniid sea turtles than to dermochelyid ("leatherback") sea turtles.^[2]

Genera

The following list of non-cheloniid pancheloniid genera was published by Hirayama and Tong in 2003, unless otherwise noted.^[3]

• Genus †Allopleuron
• Genus †Argillochelys
• Genus †Carolinochelys
• Genus †Catapleura
• Genus †Erquelinnesia
• Genus †Gigantatypus
• Genus †Glyptochelone
• Genus †Itilochelys^[4]
• Genus †Lytoloma
• Genus †Osteopygis
• Genus †Pampaemys
• Genus †Peritresius
• Genus †Porthochelys
• Genus †Prionochelys
• Genus †Procolpochelys
• Genus †Retechelys
• Genus †Tasbacka
• Genus †Thinochelys

Cladogram

Below is a cladogram showing the phylogenetic relationships of living and extinct sea turtles in the clade Pancheloniidae based on Lynch and Parham (2003)^[5] and Parham and Pyenson (2010).^[6]

Lytoloma fossil

Panheloniidae	†Toxochelys †Mexichelys †Lophochleyinae †Euclastes †Argillochelys †Eochelone †Erquelinnesla †Pacifichelys †Puppigerus Cheloniidae

References

1. Kear BP, Lee MS (March 2006). "A primitive protostegid from Australia and early sea turtle evolution". Biol. Lett. 2 (1): 116–9. doi:10.1098/rsbl.2005.0406. PMC 1617175. PMID 17148342.
2. Joyce W.G, Parham J.F, Gauthier J.A. Developing a protocol for the conversion of rank-based taxon names to phylogenetically defined clade names, as exemplified by turtles. J. Paleont. 2004;78:989–1013.
3. Hirayama, R., & Tong, H. (2003). "Osteopygis (Testudines: Cheloniidae) from the Lower Tertiary of the Ouled Abdoun phosphate basin, Morocco." Palaeontology, 46(5): 845-856.
4. Danilov, I.G.; Averianov, A.O; Yarkov, A.A. (2010). "Itilochelys rasstrigin gen. et sp. nov., a new hard-shelled sea turtle (Cheloniidae sensu lato) from the Lower Palaeocene of Volgograd Province, Russia" (PDF). Proceedings of the Zoological Institute RSA. 314 (1): 24–41.
5. Lynch, S.C.; Parham, J.F. (2003). "The first report of hard-shelled sea turtles (Cheloniidae sensu lato) from the Miocene of California, including a new species (Euclastes hutchisoni) with unusually plesiomorphic characters" (PDF). PaleoBios. 23 (3): 21–35.
6. James F. Parham; Nicholas D. Pyenson (2010). "New Sea Turtle from the Miocene of Peru and the Iterative Evolution of Feeding Ecomorphologies since the Cretaceous". Journal of Paleontology. 84 (2): 231–247. doi:10.1666/09-077R.1.