1.Previous
3.Next

large in many extinct amphibians and their sarcopterygian (lobe-finned fish) ancestors, stretching forwards to contact the prefrontal, thus separating the frontal from the rim of the orbit. In living amphibians (lissamphibians), the postfrontal is absent, having failed to ossify during development. The postfrontal is present but reduced in some reptiles, including modern squamates

1.Previous
3.Next