BUCHERINA Brönnimann and Brown, 1956

 

 

Type species: Bucherina sandidgei Brönnimann and Brown, 1956; OD.

Bucherina Brönnimann and Brown. 1956 (*394), p. 557.

Test planoconvex, with low trochospiral coil, later commonly with a change in plane of coiling so that the final whorl is in a lower plane, chambers inflated on the spiral side, somewhat flattened on the umbilical side, sutures straight and depressed, umbilicus wide and deep, periphery truncate, with a single keel at the spiral margin: wall calcareous, perforate. surface prominently papillate to hispid and lacking meridional costellae; primary aperture interiomarginal, umbilical, with a delicate tegilla, that commonly is broken out. U. Cretaceous (U. Maastrichtian); Cuba; N. and S. Atlantic; Egypt.