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Hannibal FM
USA    39.39 N, 90.98 W
Mississippian / Carboniferous
the images are contributed by James E. and Barbara M. Conkin
     

The images are provided by Dr. James E. Conkin and Prof. Barbara M. Conkin, Louisville, Kentucky. The specimens were found by them and James W. Pike at 13 localities shown left.

The images and accompanying information are published: Conkin, J. E., Conkin, B. M. and James W. Pike, 1965: Mississippian Foraminifera of the United States Part 2: The Hannibal Formation of northeastern Missouri and western Illinois in micropaleontology Volume 11 Number 3, July 1965 Pages 335-359.
We thank Micropaleontology Press for giving the permission to use the images and accompanying information. Read more in the above mentioned article as a subscriber of the journal micropaleontology or ask your local library to subsribe to micropaleontology.

sorted by genus, species             sorted by morphology
    
Ammobaculites
beveridgei
Ammobaculites
pyriformis
Ammodiscella
sp.
Ammodiscus
semiconstrictus
Ammovertella
pikei
Ammovertella
sp.
Ammovertella
sp.
 
 
 
 
 
 
 
Ammovertella
sp.
Blastammina
eisenacki
Endothyra
bunkerae
Hyperammina
casteri
Hyperammina
constricta
Hyperammina
rockfordensis
Lagenammina
cumberlandiae
 
 
 
 
 
 
 
Lagenammina
sp.
Lagenammina
sp.
Oxinoxis
ligula
Oxinoxis
ligula
Psammosphaera
sp.
Pseudastrorhiza
conica
Rectoammodiscus
longexsertus
 
 
 
 
 
 
 
Reophax
northviewensis
Reophax
sp.
Rockfordina
lachrymosa
Thuramminoides
pusillus
Tolypammina
bulbosa
Tolypammina
frizzelli
Tolypammina
jacobschapelensis
 
 
 
 
 
 
 
Tolypammina
sp.
Trepeilopsis
glomospiroides
Trepeilopsis
recurvidens
Trepeilopsis
spiralis
Trepeilopsis
spiralis
Trochammina
mehli