| phylum comprised of chordates |
| warm-blooded vertebrate with feathers, wings, scaly legs and beak which bear young in shelled eggs |
carina ca·ri·na (kə-rī'nə, -rē'-)
n. pl. ca·ri·nae (-nē)
A keel-shaped ridge or structure, such as the ridge on the under surface of the fornix of the brain.