Leptocyrtoceras powellense (FOSSIL) Ulrich & al., 1944 † USA, Arkansas, Marion
Leptocyrtoceras virginianum (FOSSIL) Ulrich & al., 1944 † Virginia, Rockingham County
Monogonoceras alabamense (FOSSIL) Ulrich & al., 1944 † Alabama, Shelby County
Monogonoceras magnisiphonatum (FOSSIL) Ulrich & al., 1944 † USA. Virginia
Monogonoceras subrectum (FOSSIL) Ulrich & al., 1944 † USA, Missouri, Wright
Stylocyrtoceras avaense (FOSSIL) Ulrich & al., 1944 † Missouri
Stylocyrtoceras tantillum (FOSSIL) (Stauffer, 1937 †) USA, Minnesota, Goodhue