Cenomanian to Turonian
New Mexico to Wyoming
Original presentation: Metoicoceras whitei praecox
Original publication: Haas. 1949. [p. 15, pls. 5-7, text-figs 5-9].
Holotype: AMNH 26415.
Type locality: “northeast of Greybull, Big Horn County, Wyoming” (Cobban and Kennedy, 1991, p. B2).
Type horizon: Cody Shale (Cobban and Kennedy, 1991).
PaleoDB taxon number: 318406.
References: Cobban and Kennedy (1991).