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Cryptodira
Temporal range: Early Jurassic—Present, 190–0 Ma
[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.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
421 videos foundNext > 

Cryptodira - Descent

DESCENT Evolve and survive We evolve past survival Egotistically stunted We won't get anywhere if we are such narcissists Ego ends collective growth Evolve ...

Cryptodira - An Unmarked Grave (Acoustic Version ft. Samantha Marie Raia)

A performance of an acoustic rendition of "An Unmarked Grave" featuring Samantha Marie Raia.

Cryptodira - Descent (Drum Play Through)

Our drummer Matthew Taibi playing along to "Descent," a new track off our upcoming EP, "An Unmarked Grave," out 1/4/14!

Cryptodira @ Amityville Music Hall 1/4/14

Follow us on social media! http://facebook.com/nothingspecialent http://twitter.com/nothingspecent.

Cryptodira - An Unmarked Grave

AN UNMARKED GRAVE The chills running down my spine Must be a reminder from you I'm alive Return, readjust Filled with urgency Suddenly and violently I ...

CRYPTODIRA live at Saint Vitus Bar, Sep. 17th, 2013

Pit Full of Shit http://pitfullofshit.blogspot.com/ https://www.facebook.com/PitFullOfShit http://pitfullofshit.tumblr.com/ ...

LIVE: Cryptodira - "Either Fly or Fall Faster"

Cryptodira perform "Either Fly or Fall Faster" off of their album 'Recursions' at Saint Vitus in Brooklyn March 31, 2014. SUBSCRIBE to Heavy Blog Is Heavy on ...

Cryptodira Studio Update #1 (2012)

SOON.

Cryptodira "Chop Suey" Cover

7/19/12 @ Cedar Beach.

Cryptodira

6/3/11.

421 videos foundNext > 

59 news items

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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 ...

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Thu, 31 Jul 2014 13:00:40 -0700

The local prog-rockers in Trees on Mars take their craft seriously, delivering tangled instrumentals that lean confidently on familiar genre tropes. Long Island-based tourmates Johnny Booth and Cryptodira explore their own progressive impulses through ...

Telegraph.co.uk

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Tue, 03 Feb 2015 03:03:45 -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 ...

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, ...

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Mon, 27 Jul 2015 17:33:45 -0700

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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 ...
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