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http://en.wikipedia.org/wiki/Anapsida - http://en.wikipedia.org/wiki/Anapsida
Information from Wikipedia on this class of reptiles which includes the tortoises, turtles and terrapins. |
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Introduction to Anapsida - http://www.ucmp.berkeley.edu/anapsids/anapsida.html
Information on this clade which includes turtles and all their extinct relatives, their fossil record, life history, ecology, systematics and morphology. |
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Palaeos Vertebrates: Anapsida - http://www.palaeos.com/Vertebrates/Units/Unit200/000.html
Provides an abbreviated cladogram, information on the appearance of the anapsids in the Permian and their subsequent history, with descriptions and information on a number of groups. |
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Fossil Groups: Anapsida - http://palaeo.gly.bris.ac.uk/Palaeofiles/Fossilgroups/anapsida/
Provides information on this group of amniotes, their characters and anatomy, major subgroups, fossil record, modern forms, literature and weblinks. |
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Provelosaurus brasilienses - http://www.ufrgs.br/geociencias/paleo/pareiassauroi.html
Photograph of the fossil skull of this pareiasaur from the late Permian. |