Caron (1985):
Size, number and arrangement of chambers are similar to H.
bizonae, from which it differs in the more rounded and less
radially elongated chambers. Relict apertures may be preserved on the spiral side.
Pflaumann & Krasheninnikov (1977):
Mostly six, more rarely six and one-half chambers in the last
whorl are radially subelongate. Spiral side concave, periphery
strongly lobate, umbilicus wide. Range after Longoria: within late
Aptian. |
Longoria,J.F. (1974): Stratigraphic, morphologic and taxonomic studies of Aptian planktonic Foraminifera . Revista Espanola de MicropaleontologíaNo extraord p. 1-107
Pflaumann,U. and Krasheninnikov,V.. (1977): Early Cretaceous planktonic foraminifers from eastern North Atlantic, DSDP Leg 41 . In: Initial Reports of the Deep Sea Drilling Project 41 , Abidjan, Ivory Coast, to Malaga, Spain, February-April 1975 Eds: Gardner, J..Herring, J.. p. 539-564
Caron,M. (1985): Cretaceous planktic foraminifera. In: Plankton stratigraphy Eds: Bolli, H.M.Saunders, J.B.Perch-Nielsen, K. p. 17–86
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