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2025-07-19

“petalodont”的英英意思

单词

petalodont

释义

petalodont, a. and n. Palæont.|ˈpɛtələʊdɒnt|
[f. mod.L. Petalodūs (-odont-), name of the typical genus, f. Gr. πέταλον leaf + ὀδούς, ὀδοντ- tooth.]
a. adj. Belonging to the extinct family Petalodontidæ of sharks, having compressed teeth forming a pavement.
b. n. A shark of this family. So petaloˈdontid; petaloˈdontoid a. and n.
1889Nicholson Palæont. II. iii. xlvii. 929 Family Petalodontidæ.—The Petalodonts form a family exclusively Carboniferous.

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