Thurmanniceras wilcoxi (FOSSIL) Anderson, 1938 †
Holcoptychites agrioensis (FOSSIL) C.S. Weaver, 1931 †
Holcoptychites magdalenae (FOSSIL) J.H.F. Douvillé, 1910 †
Holcoptychites neuquensis (FOSSIL) J.H.F. Douvillé, 1910 †
Holcoptychites recopei (FOSSIL) J.H.F. Douvillé, 1910 †