CIBICORBIS Hadley, 1934

 

 

Type species: Cibicorbis herricki Hadley, 1934; OD.

Cibicorbis Hadley. 1934 (*1353), p. 26.Test trochospiral, planoconvex, with flattened and partially involute spiral side and involute umbilical side with closed umbilicus, chambers broad and low, increasing rapidly in breadth so that whorls are flaring, trian^gular in section, inflated and with sharply angled apertural face on the umbilical side, margin of the spiral side carinate, sutures thickened, curved, slightly elevated; wall calcareous, perforate, optical character unknown, sur­face smooth: aperture an interiomarginal slit on the umbilical side, extending from the umbilicus to the periphery, with a large imper­forate apertural flap projecting over the umbilicus. M. Miocene: Cuba; Haiti.