Ordosemys

Ordosemys Temporal range: Early Cretaceous

O. liaoxiensis
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Sauropsida
Order:	Testudines
Suborder:	Cryptodira
Genus:	Ordosemys Brinkman & Peng, 1994
Species
O. brinkmania O. leios O. liaoxiensis O. perforata

Ordosemys is an extinct genus of sea turtle from the Cretaceous period.^[1]

Psittacosaurus fossil from China preserved on a slab alongside Ordosemys liaoxiensis, displayed in Shanghai Ocean Aquarium

References

↑ Tong, H.; Ji, S. U. A.; Ji, Q. (2004). "Ordosemys (Testudines: Cryptodira) from the Yixian Formation of Liaoning Province, Northeastern China: new specimens and systematic revision". American Museum Novitates. 438: 1. doi:10.1206/0003-0082(2004)438<0001:OTCFTY>2.0.CO;2.

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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