Crossopterygian



[kro-sop-tuh-rij-ee-uh n] /krɒˌsɒp təˈrɪdʒ i ən/

noun
1.
any fish of the group Crossopterygii, extinct except for the coelacanth, regarded as being ancestral to amphibians and other land vertebrates.
adjective
2.
pertaining to or resembling a crossopterygian.
/krɒˌsɒptəˈrɪdʒɪən/
noun
1.
any bony fish of the subclass Crossopterygii, having fleshy limblike pectoral fins. The group, now mostly extinct, contains the ancestors of the amphibians See also coelacanth
adjective
2.
of, relating to, or belonging to the Crossopterygii
crossopterygian
(krŏ-sŏp’tə-rĭj’ē-ən)
Any of a mostly extinct group of lobe-finned fishes of the order Crossopterygii, whose only living member is the coelacanth. One group of crossopterygians is thought to have evolved into terrestrial vertebrates beginning in the Devonian Period. See more at coelacanth.

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