Pacifichelys

Pacifichelys Temporal range: Miocene

Skull of Pacifichelys urbinai
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Sauropsida
Order:	Testudines
Suborder:	Cryptodira
Superfamily:	Chelonioidea
Genus:	Pacifichelys
Type species
Pacifichelys urbinai Parham and Pyenson, 2010
Species
P. urbinai Parham and Pyenson, 2010 P. hutchisoni (Lynch and Parham, 2003)
Synonyms
Euclastes hutchisoni Lynch and Parham, 2003)

Pacifichelys is an extinct genus of sea turtle from the Miocene of Peru and California.^[1] It was first named by James F. Parham and Nicholas D. Pyenson in 2010, and the type species is Pacifichelys urbinai from Peru.^[1] A second species, P. hutchisoni, was reassigned from the genus Euclastes. It is known from the Miocene of California. Like the living Ridley and Loggerhead sea turtles, Pacifichelys was durophagous, consuming hard-shelled organisms with crushing jaws.^[1]

Cladogram based on Lynch and Parham (2003)^[2] and Parham and Pyenson (2010):^[1]

An artist concept of Pacifichelys urbinai based on fossil records and descriptions

Cheloniidae sensu lato

Toxochelys

Mexichelys ^[3]

Lophochelyinae

Euclastes

Argillochelys

Eochelone

	Erquelinnesla

	Pacifichelys

	Puppigerus

	Cheloniidae sensu stricto

References

1 2 3 4 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.
↑ 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.
↑ http://paleodb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=165647&is_real_user=0

Extinct turtles

Triassic period	Pappochelys Odontochelys Proganochelys

Jurassic period	Australochelys Basilochelys Caribemys Condorchelys Dinochelys Dorsetochelys Eileanchelys Eurysternum Hispaniachelys Kayentachelys Palaeomedusa Sinaspideretes Thalassemys Uluops

Cretaceous period	Allopleuron Atlantochelys Angolachelys Anomalochelys Araripemys Archelon Arvinachelys Bouliachelys Caririemys Cearachelys Chelosphargis Chupacabrachelys Compsemys Corsochelys Cratochelone Ctenochelys Desmatochelys Emarginachelys Foxemys Gigantatypus Gilmoremys Glyptops Jiangxichelys Kallokibotion Kinkonychelys Kirgizemys Khunnuchelys Kurmademys Liaochelys Lomalatachelys Notochelone Ocepechelon Pappigerus Paracryptodira Patagoniaemys Polysternon Pleurosternon Prochelidella Protostega Protostegidae Pneumatoarthrus Sankuchemys Santanachelys Sinemys Terlinguachelys Toxochelys Trionyx kansaiensis Yaminuechelys

Paleogene and Neogene period	Acherontemys Allaeochelys Anosteira Arabemys Argillochelys Aurorachelys Baenidae Berruchelus Carbonemys Carolinochelys Cedrobaena Cerrejonemys Chelodina murrayi Chelydrops Chelydropsis Chisternon Cosmochelys Crossochelys Elseya uberrima Elseya nadibajagu Eochelone Eosphargis Euclastes Gamerabaena Glarichelys Hadrianus Hesperotestudo Hutchemys Itilochelys Kinosternon pojoaque Macrocephalochelys Manchurochelys Meiolania Meiolaniidae Megalochelys Mesodermochelys Mexichelys Miocaretta Niolamia Ninjemys Pacifichelys Palaeotrionyx Palatobaena Parahydraspis Peckemys Planiplastron Plesiobaena Procolpochelys Protochelydra Protosphargis Psephophorus Puppigerus Rheodytes devisi Stupendemys Stylemys Syllomus Warkalania

Recent	Cylindraspis species: Domed Mauritius giant tortoise Domed Rodrigues giant tortoise Réunion giant tortoise Saddle-backed Mauritius giant tortoise Saddle-backed Rodrigues giant tortoise Aldabrachelys abrupta Chelonoidis nigra abingdonii (Lonesome George)

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