Dallas-Fort Worth
USA    32.78 N, 97.17 W
Cenomanian / Cretaceous
Upper Cretaceous, Upper Cenomanian, Lower Eagle Ford Group, lower Britton Formation, Turner Park Member
Read more: Short Overview
Friedman,V. 2004. Paleontology, Paleoecology and Depositional
Environment of the lower Eagle Ford Group in North Central Texas.
Masters Thesis, University of Texas at Dallas. 176 pp.
Part 1 (PDF, 12 MB)   Part 2 (PDF, 10 MB)

the specimens are provided by Virginia Friedman


sorted by genus, species             sorted by morphology
    

Heterohelix
sp.
Muricohedbergella
delrioensis

Muricohedbergella
delrioensis

Muricohedbergella
delrioensis

Muricohedbergella
delrioensis

Muricohedbergella
delrioensis

Planoheterohelix
moremani

 
 
 
 
 
 
 
Planoheterohelix
moremani

Protoheterohelix
washitensis

Protoheterohelix
washitensis

Protoheterohelix
washitensis

Protoheterohelix
sp.