ichthyosauria



ichthyosauria defined in 1951 year

ichthyosauria - 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


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