Prehistoric Ornithurae (Taxonomic Rank: Genus)

Extinct, ancestrial Ornithurae including the Liaoningornithiformes, Chaoyangiiformes, Hesperornithiformes, Ambiortiformes, Ichthyornithiformes, and Apatornithidae.

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	Ambiortus Apatornis Asiahesperornis Baptornis Chaoyangia Coniornis Enaliornis Gargantuavis Hesperornis Horezmavis Ichthyornis Judinornis Liaoningornis Limenavis Parahesperornis Pasquiaornis Potamornis Songlingornis

= Extinct Life Forms   = Living Creatures   = Fictional Beasts   = Inanimate Objects   = Ethereal Entities   = At least one collectible is catalogued