Protoheterohelix washitensis (Tappan, 1940)Class: Rotaliata Subclass: Globigerinana Order: Heterohelicida Family: Heterohelicidaefound 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 washitensis (Tappan, 1940) The identification is based upon: Caron, Michele, 1985: Cretaceous planktic foraminifera in Bolli et al., 1985: Plankton Stratigraphy Cambridge University Press 599 pp. Plate 24, Fig. 6-7 ![]() |
![]() dataset number: FEU-1004370 |