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Globorotalia menardii 'B' Bolli 1970 from: Bolli, H.M.Saunders, J.B. (1985): Oligocene to Holocene low latitude planktic foraminifers. In: Plankton Stratigraphy Eds: Bolli, H.M.Saunders, J.B. p. 155-262
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Forma Globorotalia menardii 'B' Bolli 1970


Discussion / Comments:
Bolli & Saunders (1985):
Globorotalia menardii 'B' was introduced by Bolli (1970) as a form intermediate between G. menardii 'A' and G. multi camerata. G. menardii 'B' first appears in the G. acostaensis Zone, probably as the ancestral form of G. multicamerata, which first occurs in the lower part of the Globorotalia margaritae Zone. It differs from G. menardii 'A' in the higher number of chambers forming the last whorl, 7-7 ½ against 5-6. As a result, specimens are usually also slightly larger in diameter and display somewhat thicker peripheral keels and intercameral sutures.
Synonym list:
Bolli & Saunders (1985):
1970 Globorotalia menardii 'B' Bolli. - Bolli : p.582 pl.5, figs.5-7
1985 Globorotalia menardii 'B' Bolli. - Bolli & Saunders : p.228 figs. 34.2-4; 6,10,11
References:

Bolli,H.M. (1970):
foraminifera of Sites 23-31, Leg 4 . Initial Rep. Deep Sea drill. Proj. Vol. 4 p. 577-643

Bolli,H.M. and Saunders,J.B. (1985):
Oligocene to Holocene low latitude planktic foraminifers.
In: Plankton Stratigraphy Eds: Bolli, H.M.Saunders, J.B. p. 155-262
Anonymous: Unedited TaxonConcept data
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