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Diplocaulus (meaning "double stalk") is an extinct genus of lepospondyl amphibians which lived from the Late Carboniferous to the Late Permian of North America and Africa. Diplocaulus is by far the largest and best-known of the lepospondyls, characterized by a distinctive boomerang-shaped skull.
The Diplocaulidae ("double cauls") is an extinct family of "nectridean" tetrapodomorphs that arose during the Late Carboniferous and died out in the Late Permian. [1] They are distinguished by the presence of strange, horn-like protrusions jutting out from the rear of their skulls; in some genera said protrusions gave their heads an almost boomerang-like outline.
A life restoration of Urocordylus, a urocordylid. Nectrideans are a diverse group of tetrapods, including the aquatic Urocordylidae, the presumably terrestrial Scincosauridae, and the bizarre horned members of Diplocaulidae (also known as Keraterpetonidae), which includes the "boomerang-headed" Diplocaulus, one of the most famous genera of prehistoric amphibians (in the traditional sense of ...
Fossilized axial skeleton of the Carboniferous-Permian amphibian Diplocaulus †Diplocaulus – type locality for genus †Diplocaulus brevirostris – type locality for species †Diplocaulus copei – type locality for species †Diplocaulus magnicornis – type locality for species †Diplocaulus primus
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Named Gondwanax paraisensis, the four-legged reptile species was roughly the size of a small dog with a long tail, or about 1 meter (39 inches) long and weighing between 3 and 6 kg (7 to 13 pounds ...
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Keraterpeton is an extinct genus of "nectridean" tetrapodomorphs, previously included within the monotypic Keraterpedontidae family, [3] from the Carboniferous period of Europe (Czech Republic, England and Ireland) [4] and North America (United States); [5] [6] it is the oldest known member of the family Diplocaulidae.