Podocnemididae















Podocnemididae
Temporal range: Late Cretaceous to present, 84.9–0 Ma

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Podocnemis unifilis 1.jpg

Yellow-spotted river turtle (Podocnemis unifilis)

Scientific classification edit
Kingdom:
Animalia
Phylum:
Chordata
Class:
Reptilia
Order:
Testudines
Suborder:
Pleurodira
Family:
Podocnemididae
Cope, 1868
Extant genera

  • Erymnochelys

  • Peltocephalus

  • Podocnemis

and see text



Synonyms

Podocnemidinae


Podocnemididae is a family of pleurodire turtles native to Madagascar and northern South America. Podocnemidid turtles are commonly called "side-necked turtles" in direct reference to their inability to retract their heads backwards, but hide them sideways. These turtles are all aquatic, inhabiting streams and other flowing water. Their shells are streamlined to aid in swimming.



Taxonomy and systematics


Podocnemididae has been merged into the closely related family Pelomedusidae as the subfamily Podocnemidinae. Some authors still maintain this classification,[1] but here it is preferred to keep them distinct families in the superfamily Pelomedusoidea instead.


The family Podocnemididae contains only three living genera, two of them monotypic:



  • Erymnochelys – Madagascan big-headed turtle


  • Peltocephalus – big-headed Amazon River turtle


  • Podocnemis – South American side-necked river turtles

The family also contains a number of prehistoric genera, including Albertwoodemys, Bairdemys, Bauruemys, Brontochelys, Caninemys, Cordichelys, Dacquemys, Lapparentemys, Latentemys, Lemurchelys, Mogharemys, Neochelys, Papoulemys, Peiropemys, Pricemys, Shweboemys, Stereogenys, Turkanemys, Cambaremys, Carbonemys, Cerrejonemys, Kenyemys, Roxochelys and Stupendemys.[2]Stupendemys lived around 5.5 million years ago in northern South America, and was the largest freshwater turtle and the largest pleurodire known to date.



References




  1. ^ Fritz Jürgen Obst (1998). "Pelomedusinae". In H. G. Cogger; R. G. Zweifel. Encyclopedia of Reptiles and Amphibians. San Diego: Academic Press. pp. 112–113. ISBN 0-12-178560-2..mw-parser-output cite.citationfont-style:inherit.mw-parser-output .citation qquotes:"""""""'""'".mw-parser-output .citation .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-ws-icon abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center.mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-maintdisplay:none;color:#33aa33;margin-left:0.3em.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em


  2. ^ Eugene S. Gaffney; Peter A. Meylan; Roger C. Wood; Elwyn Simons; Diogenes De Almeida Campos (2011). "Evolution of the Side-Necked Turtles: The Family Podocnemididae". Bulletin of the American Museum of Natural History. 350: 1–237. doi:10.1206/350.1.




External links



  • Media related to Podocnemididae at Wikimedia Commons


  • Data related to Podocnemididae at Wikispecies


  • "Podocnemididae". Retrieved 2008-01-22.









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