Early
radiation of the Reptiles.
The ancestors of advanced reptiles, the captorhinids,
appeared in the Carboniferous
and were widely distributed in the Early Permian.They
are well known from the Early
Permian of North America whereas their Late Permian
remains in East Europe are
relatively scarce. Descendants of the captorhinids
can be divided into two principal
groups in accordance with the structure of the
skull.
