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Cryptodira
Temporal range: Early Jurassic—Present, 190–0Ma [citation needed]
Tortoise.aldabra.750pix.jpg
Aldabra giant tortoise (Aldabrachelys gigantea)
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Testudines
Suborder: Cryptodira
Cope, 1868[1]
Subgroups

Eucryptodira
Paracryptodira

Synonyms[1][2]

Cryptoderes Duméril and Bibron, 1834
Cryptodera Lichtenstein, 1856
Cryptodira Cope, 1868
Cryptodiramorpha Lee, 1995
Pancryptodira Joyce, Parham, and Gauthier, 2004

Cryptodira is the taxonomic suborder of Testudines that includes most living tortoises and turtles. Cryptodira differ from Pleurodira (side-neck turtles) in that they lower their necks and pull the heads straight back into the shells; instead of folding their necks sideways along the body under the shells' margins. They include among their species freshwater turtles, snapping turtles, tortoises, soft shell turtles, and sea turtles.

Systematics and evolution[edit]

Cryptodires evolved during the Jurassic period, and by the end of the Jurassic had almost completely replaced Pleurodires in the lakes and rivers, while beginning to develop land-based species.

Cryptodira has three living superfamilies, the Chelonioidea (sea turtles), Testudinoidea (tortoises and pond turtles) and Trionychoidea (softshell turtles and relatives). The families within Kinosternoidea are now recognized as a paraphyletic assemblage of mostly primitive Trionychoidea; they do not form a natural group.[3]

Two circumscriptions of the Cryptodira are commonly found. One is used here; it includes a number of primitive extinct lineages known only from fossils, as well as the Eucryptodira. These are, in turn, made up from some very basal groups, and the Centrocryptodira contains the prehistoric relatives of the living cryptodires, as well as the latter, which are collectively called Polycryptodira.[3]

The alternate concept restricts the use of the term "Cryptodira" to the crown clade (i.e. Polycryptodira). The Cryptodira as understood here are called Cryptodiramorpha in this view. Under this approach, the pleurodires and cryptodires are not sister taxa.[3]

As per the system used here, the Cryptodira can be classified as:[4]

The Indian flapshell turtle (Lissemys punctata) from the Trionychidae is a highly advanced eucryptodire

Footnotes[edit]

  1. ^ a b Rhodin 2011, p. 000.171
  2. ^ Rhodin 2008, p. 000.3
  3. ^ a b c See references in Haaramo (2008)
  4. ^ Anquetin, J. R. M. (2012). "Reassessment of the phylogenetic interrelationships of basal turtles (Testudinata)". Journal of Systematic Palaeontology 10: 3. doi:10.1080/14772019.2011.558928.  edit

References[edit]


Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Cryptodira — Please support Wikipedia.
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Wed, 20 May 2015 14:45:35 -0700

The band played their first show in seven years this past Friday night (5/15) at Revolution Bar & Music Hall in LI with support from Nora, Divider and Cryptodira (check out a clip from FATA's set at the end of this post), which was followed by an ...

Under the Gun Review

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Wed, 03 Dec 2014 11:03:48 -0800

Hey, prog-metal heads: Washington D.C. based prog-metal band Wings Denied just announced a co-headlining tour in January with New York's Cryptodira. The bands will be making 13 stops, primarily on the East Coast, ending back in Wings Denied's ...

Live Science

Live Science
Thu, 12 Mar 2015 14:15:00 -0700

A huge sea turtle found stranded on a remote South Carolina beach over the weekend was returned to the wild today (March 12). The nearly 500-lb. (215 kilograms) leatherback turtle was rescued Saturday (March 7) on Yawkey-South Island Reserve, ...

Telegraph.co.uk

Telegraph.co.uk
Tue, 03 Feb 2015 03:04:23 -0800

Jonathan, of the species testudinidae cryptodira, was brought to the British territory of St Helena, a tiny island in the South Atlantic, in 1882, when he was already mature, meaning that he was at least 50 years old. He is thought to have been shipped ...

The Guardian

The Guardian
Wed, 25 Feb 2015 23:00:12 -0800

They left in small groups, through the narrow lanes of the city, on to the ferry across the glassy blue sea and then, past the tourists waiting for connections to luxury resorts, to the airport. Their ultimate destination: Syria, and the “caliphate” of ...

The Guardian

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Wed, 10 Dec 2014 18:10:20 -0800

The scene of a bomb blast at a bus station in Nigeria that killed 23 people Locals inspect the site of a bomb blast at a bus station in Gombe, north-eastern Nigeria. At least 23 people were reported killed in the explosion, which was suspected to be ...

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Tue, 07 Apr 2015 13:43:53 -0700

Floridians are sometimes unaware of the environment they live in. Most residents are from out-of-state and have little experience dealing with the wide array of flora and fauna that exist right outside their front doors. A recent example has well ...

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Wed, 04 Feb 2015 11:52:30 -0800

THE WEEKLY INJECTION: New Releases From SYLOSIS, EAST OF THE WALL/Cryptodira, 6:33, and More Out Today – 1/13. Holy hell, it's been a while. First of all, happy… Posted by Daniel Cordova | January 13, 2015. Read More · Facebook Tweet this!
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