Ichnogenus: Sarjeantopodus LOCKLEY, NADON & CURRIE, 2003
Etymology: In honor of William (Bill) A. S. Sarjeant, a renowned professionsal paleoichnologist and keen ornithologist.

Ichnospecies: semipalmatus LOCKLEY, NADON & CURRIE, 2003
Etymology: In reference to the semipalmate web.
= Morphotype A LOCKLEY & RAINFORTH, 2002

Holotype: CUMWC 224.4

Locality: The Zerbst Ranch, Niobrara County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

Age: Lancian Age, Maastrichtian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: A large tetradactyl track with a semipalmate web.

Referred material:

CU-MWC 224.5: A large tetradactyl track with a semipalmate web.