Protoheterohelix sp. ---       

Class: Rotaliata  Subclass: Globigerinana  Order: Heterohelicida  Family: Heterohelicidae
Taxon Profile

found at Dallas-Fort Worth   American South   USA   North Central Texas, Dallas-Fort Worth area

Lower Eagle Ford Group, lower Britton FM, Turner

Geological Time: Cretaceous  Upper Cretaceous  Cenomanian
Britton Formation

the image is made by Dr. Georg Rosenfeldt and Michael Hesemann with support of the
Naturwissenschaftlicher Verein in Hamburg

Read more in Virginia Friedmans Master Thesis

material provided by Virginia Friedman

View of a specimen of Protoheterohelix sp. ---

apertural view from the top, upper chamber broken

The identification is based upon:
Georgescu, Marius D. and Huber, Brian T., 2009: Early Evolution of the Cretaceous serial planktic foraminifera (Late Albian-Cenomanian) in Journal of Foraminiferal Research, Oct 2009; 39: 335 - 360. 26 pp. Plate 1-3, Fig. all


Hesemann, M., 2018: Protoheterohelix  ---. In: Hesemann, M. 2018 Project Database.
Accessed at on 2018-3-24