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Species Globigerina foliata Bolli 1957


Diagnosis / Definition:
Bolli (1957):
Shape of test low trochospiral; equatorial periphery strongly lobate. Wall calcareous, perforate, surface very finely pitted. Chambers spherical; 8 to 10, arranged in about 2 whorls; the 4 chambers of the last whorl increase very rapidly in size. Sutures on spiral side radial, deeply depressed; on umbilical side radial, deeply depressed. Umbilicus fairly small. Aperture a medium to low arch, often with a thin lip; interiomarginal, umbilical. Coiling random. Largest diameter of holotype 0.56 mm.
Discussion / Comments:
Bolli (1957):
Globigerina foliata, new species, is characterized by having almost discrete spherical chambers. The sutures between the four chambers of the last whorl are deeply incised.
Quilty (1976):
As can be seen on the figured specimen, the surface of the test is very different from that figured by Blow (1969, pl. 16, fig. 2, 3). The pores seem much more widely spaced and "pustules" are present between the perforations. The significance of this difference is not clear.
Synonym list:
Bolli (1957):
1957 Globigerina foliata Bolli. - Bolli : pl. 24, figs 1a-c new species
Quilty (1976):
1957 Globigerina foliata Bolli. - Bolli : p.111 pl. 4, figs. 1a-c
1976 Globigerina foliata Bolli. - Quilty : p.669 pl. 2, figs. 19-20
References:

Bolli,H.M. (1957):
Planktonic foraminifera from the Oligocene-Miocene Cipero and Lengua formations of Trinidad, B.W.I..
In: Studies in Foraminifery, Bulletin of the U.S. National Museum Vol. 215 Eds: Loeblich, A.R.Tappan, H.Beckmann, J.P.Bolli, H.M.Gallitelli, E.M.Troelsen, J.C. p. 97-123

Quilty,P.G.. (1976):
Planctonic foraminifera DSDP Leg 34- Nazca Plata . DSDP initial reports Vol. 34
Anonymous: Unedited TaxonConcept data
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