hesperornis

/hes-puh-rawr-nis/US // ˌhɛs pəˈrɔr nɪs //

兴业银行,兴旺发达,兴业证券

Definitions

n.名词 noun

1
- : a toothed aquatic bird of the extinct genus Hesperornis, fossils of which are found in rocks of Cretaceous age in Kansas, having the rear legs modified for swimming and reaching a length of more than 4 feet.

It was over twenty feet across his wings, from tip to tip; and, like the Hesperornis, he always had fish for dinner.
The swimming Hesperornis (see Odontornithes) was also devoid of such a structure.
This order includes only an extinct N. American bird Hesperornis.
They are of two leading types, of which the Ichthyornis and Hesperornis are the standard specimens.
Another (Hesperornis regalis) stood five or six feet high, and had rudimentary wings like those of the Penguins.