1937 Eudissoceras collinsvillense Miller & Owen: 409,
pl.52 fig.4-7.

"Syntypes: All three of the syntypes are in the private collection of John Britts Owen, of Clinton, Missouri"

"The most distinctive characteristics of this form are its primitive sutures in which the ventral lobe is bifid rather than irregularly trifid, its adolescent ribs, and its sinuous fasciculate growth lines." (Miller & Owen, 1937, p. 410)