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Pseudocrypturus Temporal range: Early Eocene
Head and neck of the holotype specimen in the Smithsonian Institution
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Infraclass:	Palaeognathae
Order:	†Lithornithiformes
Family:	†Lithornithidae
Genus:	†Pseudocrypturus Houde, 1988[2]
Type species
†Pseudocrypturus cercanaxius Houde, 1988
Other species
†?P. danielsi Mayr & Kitchener, 2025[3] †?P. gracilipes Mayr & Kitchener, 2025[3]

Pseudocrypturus is a genus of extinct paleognathous bird. Three species are known and the type species is Pseudocrypturus cercanaxius. It is a relative of such modern birds as ostriches. It lived in the early Eocene. The holotype fossil is in the collection of the Smithsonian's National Museum of Natural History. It has catalog number USNM 336103. It was collected from the Fossil Butte Member, Green River Formation, Lincoln County, Wyoming.^[4]

Pseudocrypturus means false tinamou. The type species name, cercanaxius, comes from ancient Greek words kerkion, tail, and anaxios, worthless, in reference to the rudimentary pygostyle of the species.

• Hinton, A. C.; Lang, W. D.; et al. (1996). Edwards, Marcia A. (ed.). Nomenclator Zoologicus. Vol. 9. Regents Park, London: Zoological Society of London. p. 479.
• Houde, Peter W. (1988). "Paleognathous Birds from the Early Tertiary of the Northern Hemisphere". Publications of the Nuttall Ornithological Club. 22. Cambridge MA: Nuttall Ornithological Club.

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