-
Protocycloceras abnorme
Ulrich & al., 1944 † (FOSSIL)
-
Protocycloceras arkansasense
Ulrich & al., 1944 † (FOSSIL)
-
Protocycloceras becki
(Billings, 1859 †) (FOSSIL)
-
Ectocycloceras cataline
(Billings, 1865 †) (FOSSIL)
-
Ectocycloceras cato
(Billings, 1865 †) (FOSSIL)
-
Protocycloceras catulus
(Billings, 1865 †) (FOSSIL)
-
Protocycloceras chikunense
T. Kobayashi, 1927 † (FOSSIL)
-
Catoraphiceras colon
(White, 1874 †) (FOSSIL)
-
Catoraphiceras cushingi
Ulrich & al., 1944 † (FOSSIL)
-
Protocycloceras deprati
Reed, 1928 † (FOSSIL)
-
Protocycloceras doniphonense
Ulrich & al., 1944 † (FOSSIL)
-
Catoraphiceras foerstei
(Butts, 1926 †) (FOSSIL)
-
Protocycloceras furtivum
(Billings, 1865 †) (FOSSIL)
-
Protocycloceras gangshanense
Zou, 1988 † (FOSSIL)
-
Protocycloceras geronticum
Ulrich & al., 1944 † (FOSSIL)
-
Endocycloceras gracile
Flower, 1964 † (FOSSIL)
-
Catoraphiceras ibexense
Hook & Flower, 1977 † (FOSSIL)
-
Kyminoceras kottlowskii
Hook & Flower, 1977 † (FOSSIL)
-
Protocycloceras lamarcki
(Billings, 1856 †) (FOSSIL)
-
Protocycloceras laswelli
Hook & Flower, 1977 † (FOSSIL)
-
Endocycloceras legorense
Ulrich & al., 1944 † (FOSSIL)
-
Protocycloceras levisense
Ulrich & al., 1944 † (FOSSIL)
-
Catoraphiceras lobatum
Ulrich & Foerste, 1936 † (FOSSIL)
-
Protocycloceras manitouense
Ulrich & al., 1944 † (FOSSIL)
-
Protocycloceras mendax
(Salter & Murchison, 1859 †) (FOSSIL)
-
Protocycloceras odenvillense
Ulrich & al., 1944 † (FOSSIL)
-
Protocycloceras ordinatum
(Billings, 1865 †) (FOSSIL)
-
Catoraphiceras osagense
Ulrich & al., 1944 † (FOSSIL)
-
Catoraphiceras pearsonae
Hook & Flower, 1977 † (FOSSIL)
-
Endocycloceras perannulatum
Ulrich & al., 1944 † (FOSSIL)
-
Protocycloceras philipsburgense
Ulrich & al., 1944 † (FOSSIL)
-
Catoraphiceras resseri
Ulrich & al., 1944 † (FOSSIL)
-
Protocycloceras rushense
(McChesney, 1859 †) (FOSSIL)
-
Catoraphiceras sinuatum
Hook & Flower, 1977 † (FOSSIL)
-
Protocycloceras smithvillense
Ulrich & al., 1944 † (FOSSIL)
-
Catoraphiceras sordidum
(Billings, 1859 †) (FOSSIL)
-
Catoraphiceras staceyae
Hook & Flower, 1977 † (FOSSIL)
-
Endocycloceras subcurvatum
Ulrich & al., 1944 † (FOSSIL)
-
Endocycloceras wilsonae
Ulrich & al., 1944 † (FOSSIL)
-
Protocycloceras xerxes
(Billings, 1865 †) (FOSSIL)
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