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The group Testudines, popularly known as the turtles, is an ancient clade with a grand history. ... Introduction to Testudines: The Turtles ... Testudines refers to the Chelonia and some of their extinct relatives known from the extentive fossil record of turtles. Chelonia is the single surviving branch of the Anapsida,
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www.ucmp.berkeley.edu/anapsids/testudines/testudines.ht...
www.ucmp.berkeley.edu/anapsids/testudines/testudines.html
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Today's turtles (the clade Chelonia) and the other now extinct members of the Testudines, being quite similar in overall morphology, probably had a similar mode of life, and even the extinct Testudines show some diversity in life history characteristics and inferred ecological niches.
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www.ucmp.berkeley.edu/anapsids/testudines/testudineslh....
www.ucmp.berkeley.edu/anapsids/testudines/testudineslh.html
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Turtle - Wikipedia, the free encyclopedia
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Turtles are reptiles of the order Testudines (the crown group of the superorder Chelonia ), characterised by a special bony or cartilaginous shell developed from their ribs that acts as a shield....
en.wikipedia.org/wiki/Turtle
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List of Testudines families - Wikipedia, the free encyclopedia
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This list of Testudines families shows all extant families of the Testudines. Testudines are an order of reptile commonly known as turtles, tortoises and terrapins. The testudines are some of the mo...
en.wikipedia.org/wiki/List_of_Testudines_families
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Several different scientific names are used for turtles including Chelonia, Chelonii, Testudines, and Testudinata. The earliest fossils are from the beginning of the age of dinosaurs, in the late Triassic. The Testudines reached its greatest diversity by the end of the Cretaceous.
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tolweb.org/Testudines
tolweb.org/Testudines
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ORDER TESTUDINES; ... Family Chelidae (Austro-American Side-necked turtles): Distribution is Old and New World, but there are no species native to North America. ... Unfortunately, there is only one example of these interesting turtles in lab for you to see: the matamata (the one you will see is a juvenile, but the herp house...
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www.msu.edu/user/costabil/academic/portfolio/herp_lab/T...
www.msu.edu/user/costabil/academic/portfolio/herp_lab/Testudines.htm
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Six families of the order Testudines are represented in Canada: Chelydridae, Emydidae, Dermochelyidae, Cheloniidae, Trionychidae, and Kinosternidae. To learn more about these families, check out the reptile families of Canada book!
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www.aquatic.uoguelph.ca/reptiles/books/book3/bookframe1...
www.aquatic.uoguelph.ca/reptiles/books/book3/bookframe1.htm
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Turtles of the World ... Checklist of the North American Turtles ... To find a particular species of Turtle, go to the website, click on "Species", and enter the species name for the turtle in the search box on the upper right corner of the center window. To leave Nearctica and/or the checklist permanently, close the Nearctica...
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www.nearctica.com/nathist/reptile/turtle.htm
www.nearctica.com/nathist/reptile/turtle.htm
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Such a dermal armor is characteristic of ancient pareiasaurs that are closely related to Testudines. On the basis of this fact it has been assumed that the turtle shell is built up as the fusion of the osteoderms with some elements of the internal skeleton.
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www.palaeos.com/Vertebrates/Units/Unit200/200.300.html
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