Sinaspideretes

Last updated June 24, 2025

Sinaspideretes Temporal range: Late Jurassic 161.2–155.7 Ma PreꞒ Ꞓ O S D C P T J K Pg N

Sinaspideretes wimani fossil displayed in Hong Kong Science Museum.
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Testudines
Suborder:	Cryptodira
Clade:	Polycryptodira
Superfamily:	Trionychia
Genus:	Sinaspideretes Young and Chow, 1953
Species:	S. wimani
Binomial name
*Sinaspideretes wimani* Young & Chow, 1953

Sinaspideretes is an extinct genus of turtle from the Late Jurassic of China, probably from the Shaximiao Formation. It is considered the earliest and most basal representative of the Trionychia,^[1]^[2] and is possibly the oldest known member of Cryptodira.^[3] In 2013, it was proposed that this animal and the genus Yehguia are in fact one and the same.^[4]

References

↑ Ouyang, Hui; Li, Lu; Tong, Haiyan (July 2014). "A revision of Sinaspideretes wimani Young & Chow, 1953 (Testudines: Cryptodira: Trionychoidae) from the Jurassic of the Sichuan Basin, China". Geological Magazine. 151 (4): 600–610. Bibcode:2014GeoM..151..600T. doi:10.1017/S0016756813000575. ISSN 0016-7568. S2CID 128423062.
↑ "Fossilworks: Sinaspideretes wimani". fossilworks.org. Retrieved 17 December 2021.
↑ Evers, Serjoscha W.; Benson, Roger B. J. (January 2019). Smith, Andrew (ed.). "A new phylogenetic hypothesis of turtles with implications for the timing and number of evolutionary transitions to marine lifestyles in the group" . Palaeontology. 62 (1): 93–134. Bibcode:2019Palgy..62...93E. doi:10.1111/pala.12384. S2CID 134736808.
↑ Tong, Haiyan; Li, Lu; Ouyang, Hui (2014). "A revision of Sinaspideretes wimani Young & Chow, 1953 (Testudines: Cryptodira: Trionychoidae) from the Jurassic of the Sichuan Basin, China" . Geological Magazine. 151 (4): 600–610. Bibcode:2014GeoM..151..600T. doi:10.1017/S0016756813000575. ISSN 0016-7568. S2CID 128423062.

Sources

The Age of Dinosaurs in Russia and Mongolia by Michael J. Benton, Mikhail A. Shishkin, David M. Unwin, and Evgenii N. Kurochkin
Chinese Fossil Vertebrates by Spencer G. Lucas

Testudines

Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Diapsida
Order: Testudines

Suborder

Superfamily

Family

Genus

Cryptodira

Chelonioidea
(Sea turtles)

Cheloniidae	† Allopleuron Caretta † Carolinochelys Chelonia † Eochelone Eretmochelys † Gigantatypus † Glarichelys † Itilochelys Lepidochelys † Mexichelys † Miocaretta Natator † Pacifichelys † Syllomus † Tasbacka
Dermochelyidae	† Arabemys † Corsochelys † Cosmochelys Dermochelys † Eosphargis † Mesodermochelys † Psephophorus
	† Euclastes † Peritresius † Procolpochelys † Protosphargis † Puppigerus

Kinosternoidea

Dermatemydidae	Dermatemys
Kinosternidae	Claudius † Hoplochelys Kinosternon Staurotypus Sternotherus

Testudinoidea

Emydidae	† Acherontemys Chrysemys Clemmys Deirochelys Emys Actinemys Emydoidea Glyptemys Graptemys Malaclemys Pseudemys Terrapene Trachemys † Wilburemys
Geoemydidae	Batagur † Banhxeochelys Cuora Cyclemys Geoclemys Geoemyda Hardella Heosemys Leucocephalon Malayemys Mauremys Melanochelys Morenia Notochelys Orlitia Pangshura Rhinoclemmys Sacalia Siebenrockiella Vijayachelys
Platysternidae	Platysternon
Testudinidae	Aldabrachelys Astrochelys Centrochelys Chelonoidis Chersina Cylindraspis † Cymatholcus † Floridemys Geochelone Gopherus † Hadrianus † Hesperotestudo Homopus Indotestudo Kinixys Malacochersus Manouria † Megalochelys † Oligopherus Psammobates Pyxis † Solitudo Stigmochelys † Stylemys Testudo

Trionychia

Carettochelyidae	† Allaeochelys † Anosteira Carettochelys
Trionychidae	Amyda Apalone † Axestemys Chitra Cyclanorbis Cycloderma † Drazinderetes Dogania † Gilmoremys † Hutchemys † Khunnuchelys Lissemys Nilssonia Palea † Palaeoamyda Pelochelys Pelodiscus Rafetus Trionyx
	† Basilochelys † Sinaspideretes

Chelydridae	Chelydra † Chelydrops † Chelydropsis † Emarginachelys † Macrocephalochelys Macrochelys † Planiplastron † Protochelydra
†Nanhsiungchelyidae	† Anomalochelys † Basilemys † Jiangxichelys
†Protostegidae	† Alienochelys † Archelon † Atlantochelys † Bouliachelys † Calcarichelys † Cratochelone † Desmatochelys † Iserosaurus † Notochelone † Ocepechelon † Pneumatoarthrus † Protostega † Rhinochelys † Santanachelys † Terlinguachelys
	† Adocus † Argillochelys † Bashuchelys † Ctenochelys † Prionochelys † Toxochelys

Pleurodira

†Araripemydidae	† Araripemys
†Bothremydidae	† Araiochelys † Arenila † Azabbaremys † Bothremys † Cearachelys † Chedighaii † Chupacabrachelys † Eotaphrosphys † Foxemys † Galianemys † Ilatardia † Inaechelys † Itapecuruemys † Jainemys † Kinkonychelys † Kurmademys † Labrostochelys † Nigeremys † Phosphatochelys † Polysternon † Puentemys † Rosasia † Rhothonemys † Sankuchemys † Taphrosphys † Ummulisani † Zolhafah
Chelidae	Acanthochelys Chelodina Chelus Elseya Elusor Emydura Hydromedusa † Lomalatachelys Mesoclemmys Myuchelys Phrynops Platemys † Prochelidella Pseudemydura Rheodytes Rhinemys † Yaminuechelys
Pelomedusidae	Pelomedusa Pelusios
Podocnemididae	† Albertwoodemys † Bauruemys † Brontochelys † Caninemys † Carbonemys † Cerrejonemys † Cordichelys Erymnochelys † Lapparentemys † Latentemys Peltocephalus Podocnemis † Stupendemys
†Sahonachelyidae	† Sahonachelys † Sokatra

	† Caribemys † Caririemys † Tacuarembemys

Phylogenetic arrangement of turtles based on Turtles of the World 2017 Update: Annotated Checklist and Atlas of Taxonomy, Synonymy, Distribution, and Conservation Status. † = extinct.

See also List of Testudines families

Taxon identifiers
Sinaspideretes wimani	Wikidata: Q7521816 EoL: 42338703 GBIF: 8704920 Open Tree of Life: 6156217 Paleobiology Database: 235662
Sinaspideretes	Wikidata: Q18582658 EoL: 10642527 GBIF: 4573920 IRMNG: 1202487 Open Tree of Life: 3606195 Paleobiology Database: 37684

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