Allumettoceratidae Flower, 1946 † accepted as Tripteroceratidae Flower, 1941 † (original description)
Anaspyroceras Shimizu & Obata, 1935 † (original description)
Anaspyroceras cumberlandense Flower, 1946 † (original description)
Anaspyroceras williamsae Flower, 1946 † (original description)
Clinoceratidae Flower, 1946 † (original description)
Ecdyceras Flower, 1941 † (basis of record)
Ecdyceras foerstei Flower, 1946 † (original description)
Ecdyceras sinuiferum Flower, 1941 † (basis of record)
Gomphoceras J. de C. Sowerby, 1839 † (basis of record)
Gorbyoceras Shimizu & Obata, 1935 † (basis of record)
Gorbyoceras crossi Flower, 1946 † (original description)
Gorbyoceras curvatum Flower, 1946 † (original description)
Gorbyoceras duncanae Flower, 1946 † (original description)
Gorbyoceras gorbyi (S. A. Miller, 1894) † (basis of record)
Gorbyoceras simile Flower, 1946 † (original description)
Graciloceras Flower, 1946 † (original description)
Graciloceras Flower, 1943 † (additional source)
Graciloceras longidomum Flower, 1943 † (basis of record)
Oncoceras Hall, 1847 † (basis of record)
Oncoceras anomalum Flower, 1946 † (original description)
Oncoceras arlandi Flower, 1946 † (original description)
Oncoceras bassleri Flower, 1946 † (original description)
Oncoceras cincinnatiense (S. A. Miller, 1884) † (basis of record)
Oncoceras covingtonense Flower, 1946 † (original description)
Oncoceras delicatulum Flower, 1946 † (original description)
Oncoceras duncanae Flower, 1946 † (original description)
Oncoceras elkhornense Flower, 1946 † (original description)
Oncoceras exile Flower, 1946 † (original description)
Oncoceras faberi (S. A. Miller, 1884) † (basis of record)
Oncoceras foerstei Flower, 1946 † (original description)
Oncoceras fossatum Flower, 1946 † (original description)
Oncoceras madisonense Flower, 1946 † (original description)
Oncoceratidae Hyatt, 1884 † (basis of record)
Probillingsites Foerste, 1928 † (basis of record)
Probillingsites faberi Flower, 1946 † (original description)
Probillingsites lebanonensis Flower, 1946 † (original description)
Probillingsites minutum Flower, 1946 † (original description)
Probillingsites oxfordensis Flower, 1946 † (original description)
Probillingsites welleri Foerste, 1928 † (basis of record)
Rasmussenoceras Foerste, 1932 † (basis of record)
Rasmussenoceras variabile Flower, 1946 † (original description)
Sactorthoceratidae Flower, 1946 † (original description)
Schuchertoceras A. K. Miller, 1932 † (basis of record)
Schuchertoceras discretum Flower, 1946 † (original description)
Schuchertoceras discretum var. minor Flower, 1946 † (original description)
Schuchertoceras distinctum Flower, 1946 † (original description)
Schuchertoceras geniculatum Flower, 1946 † (original description)
Schuchertoceras obscurum Flower, 1946 † (original description)
Schuchertoceras prolongatum Flower, 1946 † (original description)
Schuchertoceras rotundum Flower, 1946 † (original description)
Tripteroceras Hyatt, 1884 † (basis of record)
Whitfieldoceras casteri Flower, 1946 † (original description)

Indiana for Oncoceras duncanae Flower, 1946 † 
Indiana for Oncoceras exile Flower, 1946 † 
Indiana for Oncoceras madisonense Flower, 1946 † 
Kentucky for Oncoceras arlandi Flower, 1946 † 
Kentucky for Oncoceras bassleri Flower, 1946 † 
Kentucky for Oncoceras covingtonense Flower, 1946 † 
Kentucky for Oncoceras foerstei Flower, 1946 † 
Kentucky for Oncoceras fossatum Flower, 1946 † 
Kentucky for Probillingsites lebanonensis Flower, 1946 † 
Ohio for Anaspyroceras cumberlandense Flower, 1946 † 
Ohio for Anaspyroceras williamsae Flower, 1946 † 
Ohio for Ecdyceras foerstei Flower, 1946 † 
Ohio for Gorbyoceras curvatum Flower, 1946 † 
Ohio for Gorbyoceras duncanae Flower, 1946 † 
Ohio for Gorbyoceras simile Flower, 1946 † 
Ohio for Oncoceras anomalum Flower, 1946 † 
Ohio for Oncoceras elkhornense Flower, 1946 † 
Ohio for Probillingsites faberi Flower, 1946 † 
Ohio for Probillingsites minutum Flower, 1946 † 
Ohio for Probillingsites oxfordensis Flower, 1946 † 
Ohio for Schuchertoceras distinctum Flower, 1946 † 
Ohio for Schuchertoceras geniculatum Flower, 1946 † 
Ohio for Schuchertoceras obscurum Flower, 1946 † 
Ohio for Schuchertoceras rotundum Flower, 1946 †