| 单词 | nematognathous |
| 释义 | > as lemmasnematognathous ΚΠ 1890 Cent. Dict. Nematognathous, same as nematognath. 1895 Science 22 Nov. 679/1 With this assumption it becomes necessary to postulate that all the numerous families of the Plectospondylous and Nematognathous orders are derivatives from primitive fresh-water types. < as lemmas |
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