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Species Globorotalia bolivariana Petters 1954


Discussion / Comments:
Bolli (1957):
Globorotalia bolivariana (Petters), originally described as subspecies of Globigerina wilsoni Cole, displays a distinctly interiomarginal, umbilical extraumbilical aperture; the very narrow slit often extends towards the spiral side. The species differs from the Globorotalia opima Bolli in being more involute (chambers of the earlier whorls are almost invisible) and in being almost planispiral. G. bolivariana is restricted to the middle Eocene while G. opima ranges from the uppermost middle Eocene to the Oligocene.
Systematics:

24
 Genus Globorotalia
  Species Globorotalia bolivariana
Synonym list:
Bolli (1957):
1954 Globigerina wilsoni bolivariana Petters. - Petters : p. 39 pl. 8, figs 9a-c
1955 Globigerina wilsoni bolivariana Petters. - Weiss : p. 309 pl. 2, figs. 6-8
1955 Globigerina wilsoni Cole. - Weiss : p. 309 pl. 2, figs. 22-23
1957 Globorotalia bolivariana Petters. - Bolli : p. 274 pl. 37, figs. 14a-16
Was used in synonym list of:
Paragloborotalia griffinoides Olsson & Pearson 2006
References:

Petters,V. (1954):
Tertiary and Upper Cretaceous foraminifera from Colombia, S.A. . Contributions from the Cushman Foundation for Foraminiferal Research Vol. 5 p. 37-41

Weiss,L. (1955):
Planktonic index Foraminifera of northwestern Peru . Micropaleontology Vol. 1(4) p. 301-308

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
Anonymous: Unedited TaxonConcept data
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