Hesperornithiformes

Hesperornithiformes

[‚hes·pə‚rȯr‚nith·ə′fȯr‚mēz]
(paleontology)
An order of ancient extinct birds; individuals were large, flightless, aquatic diving birds with the shoulder girdle and wings much reduced and the legs specialized for strong swimming.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Tanaka also co-authored the report "(http://www.perotmuseum.org/media/files/Newsroom/2017/8.8.2017_Tanaka_et_al_2017_Chupkaornis.pdf) The oldest Asian Hesperornithiform from the Upper Cretaceous of Japan, and the phylogenetic reassessment of Hesperornithiformes, " which was published on the Journal of Systematic Palaeontology website Tuesday.
Hesperornithiformes were toothed, foot-propelled diving birds and one of the most widely distributed groups of birds in the Cretaceous of the northern hemisphere.