| 单词 | crossopterygian |
| 释义 | crossopterygian /kros-op-tə-rijˈ(i-)ən/nounA member of a subclass (Crossopterygˈii) of mostly extinct bony fishes, thought to be the ancestors of amphibians, having paired fins with the axis fringed with rays, and including the coelocanth (also adjective) ORIGIN: New L crossopterygii, from Gr krossoi tassels, fringe, and pteryx, -gos fin |
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