Hesperornithes is an extinct and highly specialized group of aquatic avialans closely related to the ancestors of modern birds. They inhabited both marine...
13 KB (1,279 words) - 04:51, 19 March 2024
definition: "extant birds and all other taxa, such as Ichthyornis and Hesperornithes, that are closer to extant birds than is Archaeopteryx". Later he and...
7 KB (519 words) - 11:48, 26 May 2024
2001: Potamornis skutchi. This was almost certainly a member of the Hesperornithes, the hefty and toothed flightless diving birds of the Mesozoic seas...
2 KB (229 words) - 05:53, 21 March 2024
exists for the ecology of B. advenus than for any other member of the Hesperornithes, with the possible exception of Hesperornis regalis, but still much...
9 KB (1,045 words) - 11:28, 29 April 2023
bizarre as Yungavolucris and Avisaurus. Though mostly small, marine Hesperornithes became relatively large and flightless, adapted to life in the open...
18 KB (1,693 words) - 09:02, 22 August 2024
archaic clades of birds, such as Enantiornithes, Ichthyornithes, and Hesperornithes, persisted to the latest Maastrichtian but became extinct during the...
16 KB (1,396 words) - 22:20, 13 August 2024
of enantiornithe and ornithurine forms. Though mostly small, marine hesperornithes became relatively large and flightless, adapted to life in the open...
41 KB (4,325 words) - 04:33, 24 August 2024
Ornithomimosauria, Oviraptorosauria, Deinonychosauria, Enantiornithes, and Hesperornithes. Only the Neornithes, otherwise known as modern birds, survived, and...
25 KB (2,511 words) - 06:26, 24 August 2024
penguins, ratites, and terror birds also filled niches left by the hesperornithes and other extinct dinosaurs. Pronounced cooling in the Oligocene resulted...
61 KB (6,742 words) - 03:58, 26 August 2024
flying birds) †Yanornithiformes (toothed Cretaceous Chinese birds) †Hesperornithes (specialized aquatic diving birds) Aves (modern, beaked birds and their...
71 KB (7,618 words) - 13:01, 26 August 2024
mid-Maastrichtian age, about 67 million years ago. It was a member of the Hesperornithes, flightless toothed seabirds of the Cretaceous. Among these, it belonged...
4 KB (309 words) - 19:26, 31 October 2023
like Spinosaurus have been argued to have had a semiaquatic lifestyle. Hesperornithes and penguins also adapted to this lifestyle. The metabolism of archosaurs...
59 KB (5,566 words) - 06:56, 24 August 2024
Songlingornithiformes Hongshanornithidae Gansuiformes Ichthyornithiformes Hesperornithes Lithornithiformes Dinornithiformes Aepyornithiformes Gastornithiformes...
33 KB (3,581 words) - 08:04, 23 August 2024
1093/molbev/msaa191. ISSN 0737-4038. PMC 7783168. PMID 32781465. Hope (2002) and see Hesperornithes These are the fossils described in the same paper as Pelecanus odessanus...
58 KB (5,763 words) - 16:04, 27 August 2024
hardiei and P. tankei. The genus Pasquiaornis was a member of the Hesperornithes, flightless toothed seabirds of the Cretaceous. Though its relationships...
2 KB (127 words) - 20:42, 9 July 2022
Enantiornithes (early birds with an alternative shoulder joint) Subclass Hesperornithes (toothed aquatic flightless birds) Subclass Ichthyornithes (toothed...
48 KB (3,794 words) - 03:11, 20 July 2024
a large predatory fish, appears in the fossil record. 110 Ma First hesperornithes, toothed diving birds. Earliest limopsid, verticordiid, and thyasirid...
85 KB (4,725 words) - 15:06, 9 August 2024
The largest prehistoric animals include both vertebrate and invertebrate species. Many of them are described below, along with their typical range of size...
382 KB (39,672 words) - 04:22, 2 September 2024
Songlingornithiformes Hongshanornithidae Gansuiformes Ichthyornithiformes Hesperornithes Lithornithiformes Dinornithiformes Aepyornithiformes Gastornithiformes...
110 KB (13,767 words) - 19:08, 19 August 2024
Songlingornithiformes Hongshanornithidae Gansuiformes Ichthyornithiformes Hesperornithes Lithornithiformes Dinornithiformes Aepyornithiformes Gastornithiformes...
67 KB (7,867 words) - 20:03, 31 July 2024
Songlingornithiformes Hongshanornithidae Gansuiformes Ichthyornithiformes Hesperornithes Lithornithiformes Dinornithiformes Aepyornithiformes Gastornithiformes...
15 KB (1,705 words) - 12:58, 1 July 2024
Songlingornithiformes Hongshanornithidae Gansuiformes Ichthyornithiformes Hesperornithes Lithornithiformes Dinornithiformes Aepyornithiformes Gastornithiformes...
21 KB (2,305 words) - 10:22, 18 June 2024
Songlingornithiformes Hongshanornithidae Gansuiformes Ichthyornithiformes Hesperornithes Lithornithiformes Dinornithiformes Aepyornithiformes Gastornithiformes...
54 KB (6,810 words) - 22:54, 17 August 2024
†Kookne †Limenavis †Tingmiatornis †Ichthyornithes Ichthyornis Janavis †Hesperornithes †Vegaviidae Australornis? Maaqwi? Neogaeornis? Polarornis Vegavis †Cimolopterygidae...
39 KB (4,446 words) - 06:29, 30 August 2024
Songlingornithiformes Hongshanornithidae Gansuiformes Ichthyornithiformes Hesperornithes Lithornithiformes Dinornithiformes Aepyornithiformes Gastornithiformes...
20 KB (2,236 words) - 03:30, 11 August 2024
†Kookne †Limenavis †Tingmiatornis †Ichthyornithes Ichthyornis Janavis †Hesperornithes †Vegaviidae Australornis? Maaqwi? Neogaeornis? Polarornis Vegavis †Cimolopterygidae...
18 KB (1,628 words) - 11:05, 11 August 2024
webbed feet for propulsion. Some diving birds, for example the extinct Hesperornithes of the Cretaceous Period, propelled themselves with their feet. They...
8 KB (863 words) - 19:59, 4 June 2024
Songlingornithiformes Hongshanornithidae Gansuiformes Ichthyornithiformes Hesperornithes Lithornithiformes Dinornithiformes Aepyornithiformes Gastornithiformes...
22 KB (2,350 words) - 02:51, 13 July 2024
Enantiornithes became extinct at the Cretaceous–Paleogene boundary, along with Hesperornithes and all other non-avian dinosaurs. The first Enantiornithes to be discovered...
107 KB (8,785 words) - 11:03, 23 August 2024