单词 | rhizodont |
释义 | rhizodont/ˈrʌɪzəʊdɒnt/Zoology and Palaeontology noun An animal of a group characterized by teeth attached to the jaw by roots: †(a) a reptile of the former order Rhizodonta, comprising crocodilians and their fossil relatives ( obsolete ); (b) a fish of the extinct family Rhizodontidae of rhipidistian fishes having sharp, rooted teeth. adjective Originally: of or relating to the possession of teeth attached to the jaw by roots. In later use: specifically of or relating to the extinct fish family Rhizodontidae. OriginMid 19th century; earliest use found in Louis Agassiz (1807–1873), zoologist and geologist. From rhizo- + -odont, after scientific Latin Rhizodonta, former order name. With the use in relation to fishes, compare scientific Latin Rhizodus, genus name. |
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