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Hastigerinopsis riedeli Rögl & Bolli 1973 from: Kennett, J.Srinivasan, M.S. (1983): Neogene Planktonic Foraminifera - A Phylogenetic Atlas.
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Species Hastigerinopsis riedeli Rögl & Bolli 1973


Diagnosis / Definition:
Kennett & Srinivasan (1983):
Test very small, low trochospiral to slightly streptospiral, equatorial periphery distinctly lobulate; axial periphery broadly rounded; chambers subglobular, five in the final whorl, increasing slowly in size as added, final chamber slightly bent over the umbilicus; suture distinct, nearly radial, depressed; surface smooth, delicate with very fine, widely spaced perforations and triradial spines, which are concentrated on the distal ends of chambers; aperture interiomarginal, umbilical, rather a low arch, bordered by a narrow but distinct lip.
Systematics:

3
 Classis Foraminifera
  Genus Hastigerinopsis
   Species Hastigerinopsis riedeli
Synonym list:
Kennett & Srinivasan (1983):
1973 Hastigerinella riedeli Rögl & Bolli. - Rögl & Bolli : p.567 pl 4 figs 1-5; pl 14 figs. 1-3, text fig 5a-b
References:

Rögl,F. and Bolli,H.M. (1973):
Holocene to Pleistocene planktonic foraminifera of Leg 15, Site 147 (Cariaco Basin (Trench), Caribbean Sea) and their climatic interpretation.
In: Initial Reports of the Deep Sea Drilling Project Vol. 15 Eds: Edgar, N.T. p. 553-616

Kennett,J. and Srinivasan,M.S. (1983):
Neogene Planktonic Foraminifera - A Phylogenetic Atlas.

Anonymous: Unedited TaxonConcept data
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