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Eschrichtiidae or the gray whales is a family of baleen whale (Parvorder Mysticeti) with a single extant species, the gray whale (Eschrichtius robustus), as well as four described fossil genera: Archaeschrichtius (), Glaucobalaena and Eschrichtioides from Italy, [1] [2] and Gricetoides from the Pliocene of North Carolina. [3]
Eschrichtius is a genus of baleen whale containing two species: the gray whale (E. robustus) and the extinct Akishima whale (E. akishimaensis). [2] References
The family Balaenidae, the right whales, contains two genera and four species. All right whales have no ventral grooves; a distinctive head shape with a strongly arched, narrow rostrum, bowed lower jaw; lower lips that enfold the sides and front of the rostrum; and long, narrow, elastic baleen plates (up to nine times longer than wide) with fine baleen fringes.
A giant shark that was known as a megalodon use to terrorize the underwater world. Although the enormous sharks didn't make the evolutionary cut, researchers believe they still had a big impact on ...
Eschrichtius akishimaensis, described in 2017, is one of two species, with the modern day gray whale, of the genus Eschrichtius, and is the first and only fossil species of the genus, dating to around 1.77–1.95 million years ago (mya) in the Early Pleistocene.
Image credits: kill_a_kitten #2. When a caterpillar enters a chrysalis and becomes a butterfly, it doesn't just sprout wings and legs. It essentially disintegrates into goo, and a new butterfly is ...
All modern baleen whales or mysticetes are filter-feeders which have baleen in place of teeth, though the exact means by which baleen is used differs among species (gulp-feeding within balaenopterids, skim-feeding within balaenids, and bottom plowing within eschrichtiids).
In this screen capture, Jill Horner a recent transplant to the area from Buffalo, N.Y., captured video of a shark swimming off Hilton Head Island on Sept. 4, 2022, Labor Day weekend.