Protocycloceras abnorme (FOSSIL) Ulrich & al., 1944 † USA, Vermont, Franklin
Protocycloceras arkansasense (FOSSIL) Ulrich & al., 1944 †
Protocycloceras becki (FOSSIL) (Billings, 1859 †) Canada, Quebec, Minganie-Basse-Cote-Nord
Ectocycloceras cataline (FOSSIL) (Billings, 1865 †) USA, New York, Orange
Ectocycloceras cato (FOSSIL) (Billings, 1865 †) USA, New York, Orange
Protocycloceras catulus (FOSSIL) (Billings, 1865 †) USA, Vermont, Franklin
Protocycloceras chikunense (FOSSIL) T. Kobayashi, 1927 † South Korea
Catoraphiceras colon (FOSSIL) (White, 1874 †) Utah, Juab County
Catoraphiceras cushingi (FOSSIL) Ulrich & al., 1944 † USA, New York, Saint Lawrence
Protocycloceras deprati (FOSSIL) Reed, 1928 † South Korea
Protocycloceras doniphonense (FOSSIL) Ulrich & al., 1944 †
Catoraphiceras foerstei (FOSSIL) (Butts, 1926 †) USA, Nevada, Nye
Protocycloceras furtivum (FOSSIL) (Billings, 1865 †) Canada, Ontario, Leeds and Grenville
Protocycloceras gangshanense (FOSSIL) Zou, 1988 †
Protocycloceras geronticum (FOSSIL) Ulrich & al., 1944 † USA, Vermont, Franklin
Endocycloceras gracile (FOSSIL) Flower, 1964 † USA, New Mexico, Sierra
Catoraphiceras ibexense (FOSSIL) Hook & Flower, 1977 †
Kyminoceras kottlowskii (FOSSIL) Hook & Flower, 1977 †
Protocycloceras lamarcki (FOSSIL) (Billings, 1856 †) Canada, Newfoundland and Labrador, Division No. 4
Protocycloceras laswelli (FOSSIL) Hook & Flower, 1977 † USA, Utah
Endocycloceras legorense (FOSSIL) Ulrich & al., 1944 † USA, Maryland, Frederick
Protocycloceras levisense (FOSSIL) Ulrich & al., 1944 † Canada, Quebec
Catoraphiceras lobatum (FOSSIL) Ulrich & Foerste, 1936 † USA, Tennessee, Stewart
Protocycloceras manitouense (FOSSIL) Ulrich & al., 1944 † USA, Colorado, El Paso
Protocycloceras mendax (FOSSIL) (Salter & Murchison,1859 †) UK, Scotland
Protocycloceras odenvillense (FOSSIL) Ulrich & al., 1944 † USA, Alabama, Saint Clair
Protocycloceras ordinatum (FOSSIL) (Billings, 1865 †) Canada, Quebec, Vaudreuil-Soulanges
Catoraphiceras osagense (FOSSIL) Ulrich & al., 1944 †
Catoraphiceras pearsonae (FOSSIL) Hook & Flower, 1977 † USA, Utah
Endocycloceras perannulatum (FOSSIL) Ulrich & al., 1944 † United States, Alabama
Protocycloceras philipsburgense (FOSSIL) Ulrich & al., 1944 † USA, Vermont, Franklin
Catoraphiceras resseri (FOSSIL) Ulrich & al., 1944 †
Protocycloceras rushense (FOSSIL) (McChesney, 1859 †) USA, Ohio, Guernsey
Catoraphiceras sinuatum (FOSSIL) Hook & Flower, 1977 †
Protocycloceras smithvillense (FOSSIL) Ulrich & al., 1944 † Arkansas, Lawrence County