ignored in the scientific literature in favor of the order-level name Hesperornithiformes, coined one year later. In 2004, Clarke became the first to define...

loons. More recent work looking at the morphometrics of the feet in hesperornithiformes and modern sea birds has thrown this interpretation into question...

represented by a single species; the leatherback sea turtle. The Hesperornithiformes were flightless, marine diving birds that swam like grebes. Baculites...

latter included the superficially gull-like Ichthyornis and the Hesperornithiformes, which became so well adapted to hunting fish in marine environments...

hdl:1807/77762. Tim T. Tokaryk; C. R. Harington (1992). "Baptornis sp. (Aves: Hesperornithiformes) from the Judith River Formation (Campanian) of Saskatchewan, Canada"...

between loons and the entirely unrelated extinct Cretaceous order Hesperornithiformes. In particular Enaliornis, which was apparently an ancestral and...

A Classification Uncertain Ricardoestesia gilmorei Birds such as Hesperornithiformes were present, as well as giant Pterosauria related to Quetzalcoatlus...

known to occur in the Cretaceous period, the earliest being the Hesperornithiformes, like Hesperornis regalis, a flightless loon-like seabird that could...

or ducks, like Gansus. Some evolved as swimming hunters, like the Hesperornithiformes – a group of flightless divers resembling grebes and loons. While...

considered to be the first freshwater and latest record of the order Hesperornithiformes. Although hesperornithiforms probably lost their flight abilities...

ISBN 978-0-315-61682-0. Aotsuka, Keiichi; Sato, Tamaki (2016-08-01). "Hesperornithiformes (Aves: Ornithurae) from the Upper Cretaceous Pierre Shale, Southern...

O. Averianov (2004). "New record of Hesperornis rossicus (Aves, Hesperornithiformes) in the Campanian of Saratov Province, Russia". Paleontological Research...

remains present in the Mussentuchit Member. Possible indeterminate hesperornithiformes present in the Mussentuchit Member. Besides dinosaurs, the Cedar...

fossil birds: inferences for the locomotion of Hesperornis regalis (Hesperornithiformes) and Emeus crassus (Dinornithiformes)". Journal of Ornithology. 156...

fossil birds with the presence of teeth, specifically of the orders Hesperornithiformes and Ichthyornithiformes. As such they would be regarded as transitional...

tibiotarsi, and they seem certainly more similar to the bones of Hesperornithiformes and (due to the smallish size) to Parahesperornis specifically. However...

Upper Cretaceous of Japan, and the phylogenetic reassessment of Hesperornithiformes". Journal of Systematic Palaeontology. 16 (8): 689–709. doi:10.1080/14772019...

A.; Chaippe, L.M. (2022). Buffetaut, E.; Angst, D. (eds.). "The Hesperornithiformes: A Review of the Diversity, Distribution, and Ecology of the Earliest...

features. The parapophyses in its vertebrae are similar to the extinct Hesperornithiformes, which were toothed diving birds. In their phylogenetic analyses...

Smoky Hill Member of the Niobrara Chalk  United States A member of Hesperornithiformes. The type species is Fumicollis hoffmani. Gallinago azovica Sp. nov...

1872; Plegadornis Wetmore 1962 non Brehm 1855] (Late Cretaceous) †Hesperornithiformes Fürbringer 1888 (Large, toothed, loon-like diving birds) †Chupkaornis...

73–80. Retrieved 4 September 2020. Aotsuka, K. and Sato, T. (2016). Hesperornithiformes (Aves: Ornithurae) from the Upper Cretaceous Pierre Shale, Southern...

org/10.1371/journal.pone.0141690 Martin L, Tate J. The skeleton of Baptornis advenus (Aves: Hesperornithiformes). Smith Cont Pal. 1976; 27: 35–66. v t e...

Upper Cretaceous of Japan, and the Phylogenetic Reassessment of Hesperornithiformes. Journal of Systematic Palaeontology. doi:10.1080/14772019.2017.1341960...

Upper Cretaceous of Japan, and the Phylogenetic Reassessment of Hesperornithiformes". Journal of Systematic Palaeontology. 16 (8): 689–709. doi:10.1080/14772019...

Upper Cretaceous of Japan, and the phylogenetic reassessment of Hesperornithiformes". Journal of Systematic Palaeontology. 16 (8): 689–709. Bibcode:2018JSPal...

2015-11-30. Retrieved 2014-08-19. Lev A. Nessov; A. A. Yarkov (1993). "Hesperornithiformes in Russia". Russian Journal of Ornithology. 2: 37–54. Luis M. Chiappe...

lineage, and the first one from the Southern Hemisphere. However, the Hesperornithiformes are known to have been birds of the open epicontinental and shelf...

Retrieved 2018-04-29. Aotsuka, Keiichi; Sato, Tamaki (2016-08-01). "Hesperornithiformes (Aves: Ornithurae) from the Upper Cretaceous Pierre Shale, Southern...

doi:10.1016/j.jop.2022.08.002. Bell A, Chiappe LM (2022). "The Hesperornithiformes: A Review of the Diversity, Distribution, and Ecology of the Earliest...