Globorotalia pertenuis Beard 1969 (TaxonConcept

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Species Globorotalia pertenuis Beard 1969

Alternative name:

Globorotalia (Menardella) pertenuis Beard 1969

Discussion / Comments:

Bolli & Saunders (1985):
Specimens of the species have a similar overall morphology to G. multicamerata; intermediate forms are frequent (Figs. 35.13-15). Typical specimens of G. pertenuis differ in having distinctly more delicate walls and less developed peripheral keels. With 6-8 the number of chambers forming the last whorl is often slightly less when compared with the 8-10 of G. multicamerata.
Chaisson & Leckie (1993):
Similar species: G. cf. pertenuis is gradational with G. menardii s.l. and G. limbata, but it can be distinguished from the latter taxa by its distinctively thinner test and narrow, nearly closed umbilicus.

Synonym list:

Bolli & Saunders (1985):

1969 Globorotalia pertenuis Beard. - Beard : p.552 pl.1, fig.1

1985 Globorotalia pertenuis Beard. - Bolli & Saunders : 225, 229 figs. 33.3, 35.12; 6,10,11

Chaisson & Leckie (1993):

1969 Globorotalia pertenuis Beard. - Beard : p.552 pl. 1, fig. 1-6; pl. 2, fig. 5-6

1983 Globorotalia (Menardella) pertenuis Beard. - Kennett & Srinivasan : p.130 pl. 30; fig. 7-9

1985 Globorotalia pertenuis Beard. - Bolli & Saunders : p.220 fig. 33.3a-c

1993 Globorotalia cf. pertenuis Beard. - Chaisson & Leckie : p.173 pl. 5; fig. 5-6

Was used in synonym list of:

Menardella pertenuis Beard 1969

Globorotalia (Menardella) pertenuis Beard 1969

Stratigraphy - absolute ages:

FAD: 3.45 ± 0 [Ma], Berggren et al. (1995)
LAD: 2.6 ± 0 [Ma], Berggren et al. (1995)

References:

Beard,J.H. (1969):
Pleistocene paleotemperature record based on planktonic foraminifers, Gulf of Mexico. . Transactions of the Gulf Coast Association of Geological Societies Vol. 19

Kennett,J. and Srinivasan,M.S. (1983):
Neogene Planktonic Foraminifera - A Phylogenetic Atlas.

Bolli,H.M. and Saunders,J.B. (1985):
Oligocene to Holocene low latitude planktic foraminifers.
In: Plankton Stratigraphy Eds: Bolli, H.M.Saunders, J.B. p. 155-262

Chaisson,W.P. and Leckie,R.M. (1993):
High-Resolution Planktonic Foraminifer Biostratigraphy of Site 806, Ontong Java Plateau (Western Equatorial Pacific).
In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 130 Eds: Berger, W.H.Kroenke, L.W..Mayer, L.A..et al. p. 137-178

Berggren,W.A.; Hilgen,F.J.; Langereis,C.G.; Kent,D.V.; Obradovich,J.D.; Raffi,I.; Raymo,M.E. and Shackleton,N.J. (1995):
Late Neogene chronology: New perspectives in high-resolution stratigraphy . Geological Society of America Bulletin Vol. 107(11)

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