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Class:
Rotaliata
Subclass:
Globigerinana
Order:
Heterohelicida
Family:
Heterohelicidae
Protoheterohelix
Georgescu & Huber, 2009
Protoheterohelix obscura
Georgescu and Huber, 2009
identified by scientist
Cretaceous
Protoheterohelix washitensis
(Tappan, 1940)
identified by M. Hesemann
Cretaceous
American South
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