Plesiochelys

Genus of turtle

Plesiochelys Temporal range: Jurassic, Kimmeridgian–Tithonian^[1] PreꞒ Ꞓ O S D C P T J K Pg N

Holotype shell of Plesiochelys. The shell is mounted upside-down
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Pantestudines
Clade:	Testudinata
Clade:	†Thalassochelydia
Family:	†Plesiochelyidae
Genus:	†Plesiochelys Rütimeyer, 1873
Type species
†Plesiochelys etalloni (Pictet & Humbert, 1857)
Other species
†Plesiochelys bigleri Püntener, Anquetin & Billon-Bruyat, 2017^[2]
Synonyms^[1]
Synonyms of P. etalloni: Emys etalloni Pictet & Humbert, 1857 Plesiochelys solodurensis Rütimeyer, 1873 Plesiochelys sanctaeverenae Rütimeyer, 1873 Plesiochelys langii Rütimeyer, 1873

Plesiochelys ("near turtle") is a genus of late Jurassic European and Asian turtle. The type species is Plesiochelys etalloni.^[1]

Fossil records have discovered Plesiochelys bigleri and Plesiochelys etalloni from the Kimmeridge Clay of England and outside the Swiss and French Jura Mountains.^[3]

A recent study^[4] placed Plesiochelys as an Angolachelonia and outside Testudines.

References

^ ^a ^b ^c Anquetin, J. R. M.; Deschamps, S.; Claude, J. (2014). "The rediscovery and redescription of the holotype of the Late Jurassic turtle Plesiochelys etalloni". PeerJ. 2: e258. doi:10.7717/peerj.258. PMC 3932733. PMID 24688842.
^ Christian Püntener; Jérémy Anquetin; Jean-Paul Billon-Bruyat (2017). "The comparative osteology of Plesiochelys bigleri n. sp., a new coastal marine turtle from the Late Jurassic of Porrentruy (Switzerland)". PeerJ. 5: e3482. doi:10.7717/peerj.3482. PMC 5493033. PMID 28674653.
^ Anquetin, J.; Chapman, S. D. (2016). "First report of Plesiochelys etalloni and Tropidemys langii from the Late Jurassic of the UK and the palaeobiogeography of plesiochelyid turtles". Royal Society Open Science. 3 (1): e1-2. Bibcode:2016RSOS....350470A. doi:10.1098/rsos.150470. PMC 4736927. PMID 26909172.
^ Evers, S. W., & Benson, R. B. (2019). 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.

Sources

Gaffney, Eugene S. "A taxonomic revision of the Jurassic turtles Portlandemys and Plesiochelys. American Museum Novitates; no. 2574." (1975).

External links

"Plesiochelys" at the Encyclopedia of Life

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.