Wikimedia Commons has media related to Hesperornithiformes.
Articles related to the Hesperornithes, 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.
Pages in category "Hesperornitheans"
The following 13 pages are in this category, out of 13 total. This list may not reflect recent changes.