Aves - Charadriiformes - Alcoidae

Full reference: A. Wetmore. 1926. Fossil birds formt he Green River deposits of eastern Utah. Annals of the Carnegie Museum 16(3-4):391-402

Belongs to Nautilornis according to O. P. Hay 1930

See also Ericson 2000, Lambrecht 1933, Wetmore 1940 and Wetmore 1956

Sister taxon: Nautilornis avus

Type specimen: Its type locality is Green River, which is in an Eocene terrestrial horizon in the Green River Formation of Utah

Ecology: ground dwelling carnivore

Distribution: found only at Green River

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Specimen images are retrieved through the ePANDDA API.