hesperornis
,hespә'rɔ:nis
基本解释
n. [古生](化石见于北美洲大陆)黄昏鸟
英文释义
n. A genus of large, extinct, wingless birds from the
Cretaceous deposits of Kansas, belonging to the Odontornithes. They had
teeth, and were essentially carnivorous swimming ostriches. Several
species are known. See Illust. in Append.
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