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Cuatro Ciénegas softshell
Conservation status
	; Critically Endangered (IUCN 2.3)
	CITES Appendix I (CITES)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Testudines
Suborder:	Cryptodira
Family:	Trionychidae
Genus:	Apalone
Species:	A. spinifera
Subspecies:	A. s. atra
Trinomial name
	Apalone spinifera atra; (Webb & Legler, 1960)
Synonyms
	Trionyx ater ; Webb & Legler, 1960; Trionyx spinifer ater ; — Morafka, 1977; Trionyx spiniferus ater ; — Smith & Smith, 1980; Apalone spinifera ater ; — Groombridge, 1988; Apalone ater ; — David, 1994; Trionys spiniferus ater ; — Obst, 1996; Apalone spiniferus ater ; — Ferri, 2002; Apalone spinifera atra ; — Artner, 2003; Apalone (Apalone) atra ; — Vetter, 2004;

The Cuatro Ciénegas softshell (Apalone spinifera atra), also called the black spiny softshell, is a subspecies of the spiny softshell turtle in the family Trionychidae. It is found only in the Cuatro Ciénegas Basin in the Mexican state of Coahuila and it is considered critically endangered by the IUCN.^[1] The subspecies, along with its parent species, was formerly classified in the genus Trionyx.^[5]

References

^ ^a ^b Tortoise & Freshwater Turtle Specialist Group (2016). "Apalone spinifera ssp. atra". IUCN Red List of Threatened Species. 2016: e.T1820A97408016. doi:10.2305/IUCN.UK.2016-1.RLTS.T1820A97408016.en. Retrieved 2 July 2023.
^ "Appendices | CITES". cites.org. Retrieved 14 January 2022.
^ ITIS.gov
^ Fritz & Havaš 2007, pp. 306–310.
^ Chelonia.org

Rhodin, Anders G.J.; van Dijk, Peter Paul; Inverson, John B.; Shaffer, H. Bradley; Roger, Bour (31 December 2011). "Turtles of the world, 2011 update: Annotated checklist of taxonomy, synonymy, distribution and conservation status" (PDF). Chelonian Research Monographs. 5. Archived from the original (PDF) on 31 January 2012.
Fritz, Uwe; Havaš, Peter (2007). "Checklist of Chelonians of the World". Vertebrate Zoology. 57 (2): 149–368. doi:10.3897/vz.57.e30895. S2CID 87809001.
Webb RG, Legler JM (1960). "A New Softshell Turtle (Genus Trionyx) from Coahuila, Mexico". Univ. Kansas Sci. Bull. 40 (2): 21–30. (Trionyx ater, new species).

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