Cuatro Cienegas softshell

Cuatro Ciénegas softshell
Conservation status
Critically Endangered  (IUCN 2.3)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Subphylum:	Vertebrata
Class:	Reptilia
Order:	Testudines
Family:	Trionychidae
Genus:	Apalone
Species:	A. spinifera
Subspecies:	A. s. atra
Trinomial name
Apalone spinifera atra (Webb & Legler, 1960)[1]
Synonyms[2]
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 softshell turtle in the Trionychidae family. It was formerly classified in the genus Trionyx.^[3]

Geographic range

It is found only in the Cuatro Ciénegas Basin in the state of Coahuila, Mexico.

Conservation status

As of the last assessment in 1996, it was considered "Critically Endangered" by the "IUCN Red List of Threatened Species".

References

• Tortoise & Freshwater Turtle Specialist Group (1996).
• Apalone ater.
• 2006 IUCN Red List of Threatened Species. iucnredlist.org Downloaded on 9 July 2007.
• Biodiversity.mongabay.com

Bibliography

• 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 22 January 2012. 
• Fritz, Uwe; Havaš, Peter (2007). "Checklist of Chelonians of the World" (PDF). Vertebrate Zoology. 57 (2). Archived from the original (PDF) on 17 December 2010. 

Turtle family Trionychidae
Genus	Species of the subfamily Cyclanorbinae
Cyclanorbis	Nubian flapshell turtle Senegal flapshell turtle
Cycloderma	Aubry's flapshell turtle Zambezi flapshell turtle
Lissemys	Burmese flapshell turtle Indian flapshell turtle Sri Lankan flapshell turtle
	Species of the subfamily Trionychinae
Amyda	Asiatic softshell turtle
Apalone	Florida softshell turtle Smooth softshell turtle Spiny softshell turtle
Chitra	Asian narrow-headed softshell turtle Burmese narrow-headed softshell turtle Indian narrow-headed softshell turtle
Dogania	Malayan softshell turtle
Nilssonia	Black softshell turtle Burmese peacock softshell Indian softshell turtle Indian peacock softshell turtle Leith's softshell turtle
Palea	Wattle-necked softshell turtle
Pelochelys	Cantor's giant softshell turtle New Guinea giant softshell turtle Northern New Guinea giant softshell turtle
Pelodiscus	Chinese softshell turtle Hunan softshell turtle Lesser Chinese softshell turtle Northern Chinese softshell turtle
Rafetus	Euphrates softshell turtle Yangtze giant softshell turtle
Trionyx	African softshell turtle
Phylogenetic arrangement based on turtles of the world 2011 update: annotated checklist.