| 单词 | crossopterygian |
| 释义 | Word Frequency 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 Word origin C19: from New Latin Crossopterygiī, from Greek krossoi fringe, tassels + pterugion a little wing, from pterux wing |
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