Hyperammina casteri Conkin, 1961       

Class: Astrorhizata  Subclass: Astrorhizana  Order: Astrorhizida  Family: Hippocrepinidae
Taxon Profile

found in Missouri and Illinois   Midwestern USA   USA   
from 13 localities described in the source

Geological Time: Carboniferous  Mississippian  Lower Mississippian
Hannibal Formation

images are shown with permission of micropaleontology and
are provided by James E. and Barbara M. Conkin

View of a specimen of Hyperammina casteri Conkin, 1961


The identification is based upon:
Conkin, James E., Conkin, Barbara M. and Pike, James W., 1965:
Mississippian Foraminifera of the United States Part 2:
The Hannibal Formation of northeastern Missouri and western Illinois
micropaleontology Volume 11 Number 3, July 1965 Pages 335-359 Plate 1, Fig. 23-27