Class: Spirillinata  Subclass: Ammodiscana  Order: Spirillinida  Family: Ammodiscidae

 

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 2, Fig. 29

 

 

 

dataset number: FEU-1004804