Rizoceras

Rizoceras conicum
CMNH 22691
Scale bar is 1 cm
Species
Rizoceras bellulum Flower, 1946
Occurrence: Lower Whitewater
Reference: Flower, 1946; Dalvé, 1948
Rizoceras conicum Flower, 1946
Occurrence: Greendale (Nicholas) of Cynthiana
Reference: Flower, 1946