ichthyosauria defined in 1951 yearichthyosauria - ichthyosauria;
ichthyosauria - A fossil order of Reptilia. Lived during Mesozoic. Marine, fish-like in general appearance and mode of swimming, with paddle-like limbs, dorsal fin, large vertical fish-like tail-fin with spinal column extended into lower lobe. Up to forty feet long. Probably viviparous, reproducing entirely in the water, which they doubtless never left.
near ichthyosauria in Knolik
definition of word "ichthyosauria" was readed 1273 times