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Species Globigerina senni Beckmann 1953


Alternative name:
Globigerina (Eoglobigerina) senni Beckmann 1953
Discussion / Comments:
Toumarkine & Luterbacher (1985):
This compact and thick-walled species is readily distinguished from all other Paleogene globigerinas by the slightly embracing chambers of the last whorl and by the nearly closed umbilicus, which is surrounded by distinct granulations.
Bolli (1957):
Globigerina senni Was originally described by Beckmann as a Sphaeroidinella. Sutural supplementary apertures and chamber flanges, which are typical for the genus Sphaeroidinella, do not exist in this species. It is therefore placed in Globigerina. The species is found in all Navet zones except the highest. It is likely that it developed from the upper Lizard Springs Globigerina taroubaensis Bronnimann, a species lacking the granular particles usually Seen surrounding the umbilical area in Globigerina senni.
Van Eijden & Smit (1991):
Remarks. Occurrences and abundances are not reliable, because as a result of poor preservation we often could not distinguish this species from Acarinina coalingensis (Cushman and Hanna, 1927), which has a more extraumbilical aperture. It seems to range somewhat higher.
Systematics:

15
 Classis Foraminifera
  Genus Globigerina
   Species Globigerina senni

24
  Genus Globigerina
   Species Globigerina senni

32
 Ordo Foraminiferida
  Familia Globigerinidae
   Genus Globigerina
    Species Globigerina senni
Synonym list:
Toumarkine & Luterbacher (1985):
1953 Sphaeroidinella senni Beckmann. - Beckmann : p.394 pl 26 fig 2 (type reference)
1985 Globigerina senni Beckmann. - Toumarkine & Luterbacher : p.128 figs 28.1-5
Bolli (1957):
1953 Globigerina senni Beckmann. - Beckmann : pp. 394-395 pl. 26, figs. 2-4, text-fig. 20
1957 Globigerina senni Beckmann. - Bolli : p. 272 pl. 35, figs. 10a-12
Van Eijden & Smit (1991):
1953 Sphaeroidinella senni Beckmann. - Beckmann : 394-395 fig. 20; pl. 26, figs. 2-4
1991 Globigerina senni Beckmann. - Van Eijden & Smit : p.111
Was used in synonym list of:
Subbotina senni Beckmann 1953
References:

Beckmann,J.P. (1953):
Die Foraminiferen der Oceanic Formation (Eocaen-Oligocaen) von Barbados, Kl. Antillen . Ecoglae geologicae Helvetiae Vol. 46 p. 301-412

Bolli,H.M. (1957):
Planktonic Foraminifera from the Eocene Navet and San Fernando formations of Trinidad, B.W.I. . Bull. U.S. natl. Mus. Vol. 215 p. 155-172

Toumarkine,M. and Luterbacher,H.P. (1985):
Paleocene and Eocene Planktic Foraminifera.
In: Plankton Stratigraphy p. 87-154

Van Eijden,A.J.M. and Smit,J. (1991):
Eastern Indian Ocean Cretaceous and Paleogene quantitative biostratigraphy.
In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 121 Eds: Weissel, J.Peirce, J.Taylor, E.Alt, J. p. 77-123
Anonymous: Unedited TaxonConcept data
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