Hedbergella
Hedbergella is an extinct genus of planktonic foraminifera from the Cretaceous, described by Loeblich and Tappan, 1961, as: Test free, trochospiral, biconvex, umbilicate, periphery rounded with no indication of keel or poreless margin; chambers globular to ovate; sutures depressed, radial, straight or curved; wall calcareous, finely perforate, radial in structure, surface smooth to hispid or rugose; aperture an interiomarginal, extraumbilical-umbilical arch commonly bordered above by a narrow lip or spatulate flap, ... Includes species otherwise similar to "Praeglobotruncana" but which lack a keel or poreless margin, hence is regarded as a separate genus rather than as a subgenus of  Praeglobotruncana as by Banner and Blow (1959). "Hedbergella" was named by Brönnimann and Brown in 1958, and is included in the family Hedbergellidae and the suborder Globigerinina. "Hedbergella" ranges through most of the Cretaceous, from the Hauterivian to the Maastrichtian at the end. Related genera. Genera possibly related closely to "Hedbergella" are "Asterohedbergella", "Costellagerina", and "Whiteinella", which are included with "Hedbergella" in the Hedbergellinae, but which have shorter ranges. "Asterohedbergella", which has a stellate outline, is from the Upper Cretaceous (M. to U. Cenomanian) of Israel. "Costellagerina", which has a lobate outline, is from the Upper Cretaceous (Cenomanian to Campanian ) and is cosmopolitan. "Whiteinella", which has a pustulate surface, is from the U. Cretaceous (M. Cenomanian to M. Turonian), and is also cosmopolitan. The species "Muricohedbergella delrioensis", originally described as "Globigerina cretacea var. delrioensis", was formerly accepted as "Hedbergella delrioensis". Species. Species in "Hedbergella" include: