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Stratigraphic chart of the lower Permian (partial) Content updated October 16, 2005
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CAPTORHINUS MAGNUS Eureptilia-Captorhinidae
In 2002, R. Kissel et Al. described skeletal elements of a large captorhinid that they named Captorhinus Magnus. Beyond the size, this new captorhinid differs from Captorhinus Aguti for the presence of a concave surface on the proximal head of femur, and for the presence of a single row of teeth in the dentary. Of interest, for the "Homology of Astragalus Problem" is the evidence that in Captorhinus magnus the astragalus is a composite structure derived from three centers of ossification 1) Captorhinus Magnus: dentary lateral 2) Captorhinus Magnus: dentary medial |