Hesperornis (meaning "western bird") is a genus of cormorant-like Ornithuran that spanned throughout the Campanian age, and possibly even up to the early Maastrichtian age, of the Late Cretaceous period.

Hesperornis, (genus Hesperornis), extinct birds found as fossils in Late Cretaceous Period deposits dating from 99.6 million to 65.5 million years ago; this bird is known mostly from the Great Plains region of the United States, but some remains have been found as …

Hesperornis was a large flightless bird that swam in the oceans and snared fish with a tooth-lined beak. Its small wings were held close in to the body and were of little use beyond...

Hesperornithes is an extinct and highly specialized group of aquatic avialans closely related to the ancestors of modern birds. They inhabited both marine and freshwater habitats in the Northern Hemisphere, and include genera such as Hesperornis, Parahesperornis, Baptornis, Enaliornis, and Potamornis, all strong-swimming, predatory divers.

Hesperornis (Western Bird) is an extinct genus of large toothy, flightless, seabird from the Late Cretaceous. Its lifestyle was highly similar to that of a penguin's, a flightless cormorant from the Galápagos Islands, or a loon.

Hesperornis is a flightless aquatic bird that lived 83.5 to 78 million years ago during the Late Cretaceous Period. It was first discovered in Western Kansas in 1871 by paleontologist Othniel C. Marsh. A year later, he would give it its name – a name which means “western bird.”

Hesperornis (meaning "western bird") is a genus of flightless aquatic birds that spanned the first half of the Campanian age of the Late Cretaceous period (83.5-78 mya). One of the lesser-known discoveries of the paleontologist O. C. Marsh in the late …

Gastornis is an extinct genus of large, flightless birds that lived during the mid- Paleocene to mid- Eocene epochs of the Paleogene period. Most fossils have been found in Europe, and some species typically referred to the genus are known from North America and Asia.

Feb 10, 2024 · The Hesperornis is an extinct genus of flightless aquatic birds that lived during the Late Cretaceous period, from around 80 million years ago up until the end mass extinction event around 66 million years ago. Hesperornis fossils have been found throughout the Western Interior Seaway, which covered much of central North America at the time.

Hesperornis had a sleek, feathered body and long legs with webbed feet. Its wings were small, used for steering when diving underwater. Its long jaws had many small sharp teeth....