CLAUDOSTRIATELLA Seiglie and Bermúdez,1965

 

 

Type species: Claudostriatella mexicam Seiglie and Bermúdez. 1965: OD.

Claudostriatella Seiglie and Bemúdez, 1965(*2853), p. 62.Test small, up to 0.16 mm in diameter. trochospiral, planoconvex, periphery rounded, about two rapidly enlarging whorls and up to seven chambers per whorl, early chambers subglobular, later ones increasing rapidly in breadth and becoming broad and low, sutures depressed, curved. and oblique on the spiral side, radial on the umbilical side, umbilicus small; wall calcareous, spiral side coarsely perforate, surface smooth; aperture a low interiomarginal, umbilical opening on the umbilical side. those of previous chambers filled by secondarily formed and radially striate plates over the umbilical region. M. Eocene: Mexico.