Class: Astrorhizata  Subclass: Astrorhizana  Order: Astrorhizida  Family: Psammosphaeridae
 
found in the  Hannibal FM
from 13 localities in Missouri and Illinois
   Midwestern USA   USA
 
Geological Time: Carboniferous  Mississippian  Lower Mississippian
Hannibal Formation
 
images are shown with permission of the journal micropaleontology and
are provided by
 
 
 
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. 28-30
 
 
genus.php?no=1004781&aktion=suche
 
dataset number: FEU-1004781