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Species Marginotruncana schneegansi Sigal 1952


Discussion / Comments:
Caron (1985):
M. schneegansi differs from M. sigali in having more inflated and petaloid-shaped chambers, increasing more rapidly in size, and umbilical sutures which are not raised- It diners from Dicarinella primitiva in its typical keel formed by two closely spaced parallel rows of pustules (Caron, 1974, pl. 1, figs. 4-5). Some specimens show intermediate characters between the genera Dicarinella and Marginotruncana.
Systematics:

5
 Classis Foraminifera
  Familia Globotruncanidae
   Genus Marginotruncana
    Species Marginotruncana sigali
Synonym list:
Caron (1985):
1952 Globotruncana schneegansi Sigal. - Sigal : p.33 pl 34
1974 Marginotruncana schneegansi Sigal. - Caron : 330-333 figs 1 a-c (neotype)
1985 Marginotruncana schneegansi Sigal. - Caron : 63, 64 figs 27.3-4
References:

Sigal,J. (1952):
Apercu stratigraphique sur la Micropaléontologie du Crétacé . XIXe Congrès Géologique International (Série 1), Alger Vol. 26 p. 3-47

Caron,M. (1974):
Sur la validité de quelques espèces de Globotruncana du Turonien et du Coniacien . Actes du VIe Colloque Africain de Micropaleontologie, Tunis Vol. 28 p. 329-345

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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