Reptilia - Hesperornithiformes
Parent taxon: Ornithurae according to X. Wang et al. 2014
See also Carroll 1988, Chatterjee 1991, Chiappe and Calvo 1994, Clarke et al. 2005, Elzanowski et al. 2001, Gauthier et al. 1989, Kurochkin 2000, Livezey and Zusi 2007, Martin 1984, Martin and Cordes-Person 2007, Martin and Tate 1976, Padian 2004, Sepkoski 2002, Wetmore 1940, Wetmore 1956 and Wetmore 1960
Sister taxa: Apatornis, Archaeovolans, Carinatae, Cerebavis, Changzuiornis, Chaoyangiformes, Chaoyangornithiformes, Dromaeognathae, Gargantuaviidae, Gobipterygiformes, Guildavis, Iaceornis, Ichthyornithes, Kookne, Kuszholia, Liaoningornithiformes, Limenavis, Odontoholcae, Odontoholomorphae, Qinornis, Tingmiatornis, Yanornithiformes, Yixianornithiformes
Subtaxa: Baptornithidae Brodavidae Chupkaornis Enaliornis Enaliornithidae Fumicollis Hesperornithidae Pasquiaornis Potamornis
Ecology: ground dwelling carnivore
Distribution:
• Cretaceous of Argentina (2 collections), Canada (46: Alberta, Manitoba, Northwest Territories, Nunavut, Saskatchewan), Japan (2), Kazakhstan (1), Mongolia (2), Romania (1), the Russian Federation (6), Sweden (1), the United Kingdom (1), United States (29: Alaska, Arkansas, Kansas, Montana, Nebraska, North Dakota, South Dakota, Wyoming)
Total: 91 collections including 120 occurrences