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Species Marginotruncana marianosi Douglas 1969


Discussion / Comments:
Caron (1985):
The species differs from other Marginotruncana taxa in having only one peripheral keel in the last whorl and from M. sigali in its plano-convex profile with chambers inflated on the umbilical side.
Systematics:

5
 Classis Foraminifera
  Familia Globotruncanidae
   Genus Marginotruncana
    Species Marginotruncana marianosi
     Species Marginotruncana sigali
Synonym list:
Caron (1985):
1969 Globotruncana marianosi Douglas. - Douglas : p.183 text-figs 5a-c
1985 Marginotruncana marianosi Douglas. - Caron : p.62 figs 26.5-6
References:

Douglas,R.G. (1969):
Upper Cretaceous planktonic foraminifera in northern California. Part 1 - Systematics . Micropaleontology Vol. 15 p. 151-209

Caron,M. (1985):
Cretaceous planktic foraminifera.
In: Plankton stratigraphy Eds: Bolli, H.M.Saunders, J.B.Perch-Nielsen, K. p. 17–86
Anonymous: Unedited TaxonConcept data
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