Proterochersidae

Proterochersidae; Temporal range: Triassic, 221.5–205.6 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Pantestudines
Clade:	Testudinata
Family:	† Proterochersidae ; Nopcsa, 1928
Genera
	see text
Synonyms
	Archaeochelyidae Fraas, 1913;

Last updated August 26, 2025

Proterochersidae is an extinct family of stem-turtles belonging to the clade Testudinata.^[1]^[3]

List of genera

There are four genera:^[1]^[2]

Chinlechelys Joyce et al., 2009
- Chinlechelys tenertesta Joyce et al., 2009
Keuperotesta Szczygielski & Sulej, 2016^[4] (junior synonym of Proterochersis?)^[5]
- Keuperotesta limendorsa Szczygielski & Sulej, 2016^[4]
Proterochersis Fraas, 1913
- Proterochersis intermediaFraas, 1913 (synonym of P. robusta?)^[4]
- Proterochersis porebensis Szczygielski & Sulej, 2016^[4]
- Proterochersis robusta Fraas, 1913
Thaichelys Szczygielski et al., 2025^[2]
- Thaichelys ruchae (Broin, 1984)^[2]

References

1 2 3 "†family Proterochersidae Nopcsa 1928". Paleobiology Database. Fossilworks. Retrieved 17 December 2021.
1 2 3 4 Szczygielski, T.; Dróżdż, D.; Chanthasit, P.; Manitkoon, S.; Ditbanjong, P. (2025). "The Triassic turtle of Thailand – revision of 'Proganochelys' ruchae". PLOS ONE. 20 (3): e0316338. doi: 10.1371/journal.pone.0316338 . ISSN 1932-6203. PMC 12279380 .
↑ "Proterochersidae". Global Biodiversity Information Facility . Retrieved 14 August 2020.
1 2 3 4 Szczygielski, T. & T. Sulej (2016). "Revision of the Triassic European turtles Proterochersis and Murrhardtia (Reptilia, Testudinata, Proterochersidae), with the description of new taxa from Poland and Germany". Zoological Journal of the Linnean Society. 177 (2): 395–427. doi: 10.1111/zoj.12374 .
↑ Joyce, W. G. (2017). "A review of the fossil record of basal Mesozoic turtles" (PDF). Bulletin of the Peabody Museum of Natural History. 58 (1): 65–113. Bibcode:2017BPMNH..58...65J. doi:10.3374/014.058.0105. S2CID 54982901.

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[fossilworks-1] 1 2 3 "†family Proterochersidae Nopcsa 1928". Paleobiology Database. Fossilworks. Retrieved 17 December 2021.

[Szczygielski2025-2] 1 2 3 4 Szczygielski, T.; Dróżdż, D.; Chanthasit, P.; Manitkoon, S.; Ditbanjong, P. (2025). "The Triassic turtle of Thailand – revision of 'Proganochelys' ruchae". PLOS ONE. 20 (3): e0316338. doi: 10.1371/journal.pone.0316338 . ISSN 1932-6203. PMC 12279380 .

[3] "Proterochersidae". Global Biodiversity Information Facility . Retrieved 14 August 2020.

[Szczygielski2016-4] 1 2 3 4 Szczygielski, T. & T. Sulej (2016). "Revision of the Triassic European turtles Proterochersis and Murrhardtia (Reptilia, Testudinata, Proterochersidae), with the description of new taxa from Poland and Germany". Zoological Journal of the Linnean Society. 177 (2): 395–427. doi: 10.1111/zoj.12374 .

[Joyce2017-5] Joyce, W. G. (2017). "A review of the fossil record of basal Mesozoic turtles" (PDF). Bulletin of the Peabody Museum of Natural History. 58 (1): 65–113. Bibcode:2017BPMNH..58...65J. doi:10.3374/014.058.0105. S2CID 54982901.

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