ectopterygoid

Term ID

ZFA:0000656

Synonyms

ectopterygoids

Definition

The ectopterygoid is dermal bone located at the anterior part of the palatoquadrate. It is first visible as a very thin ossification along the anteroventral border of the palatoquadrate cartilage (6.4 mm). In adults it is a long sliver of bone that is narrow anteriorly where it meets the entopterygoid in a synostosis. It is slightly wider at its posterior synostosis with the quadrate.

Appears at

Unknown

Evident until