todos |
ictodosaur | (n) intermediate in form between the therapsids and most primitive true mammals |
ictodosauria | (n) extinct reptiles of the later Triassic period, Syn. order Ictodosauria |
ictodosaur | n. An extinct reptile intermediate in form between the therapsids and most primitive true mammals. [ WordNet 1.5 ] |
Ictodosauria | n. An order of extinct reptiles of the Upper Triassic. |