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) - 11:25, 23 April 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 |
penguins, ratites, and terror birds also filled niches left by the hesperornithes and other extinct dinosaurs. Pronounced cooling in the Oligocene resulted... 23 KB (2,372 words) - 20:13, 3 May 2024 |
†Hesperornithes... 234 KB (23,348 words) - 20:34, 3 May 2024 |
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) - 13:30, 25 February 2024 |
of enantiornithe and ornithurine forms. Though mostly small, marine hesperornithes became relatively large and flightless, adapted to life in the open... 40 KB (4,269 words) - 18:05, 3 May 2024 |