TaxonConcept: Truncorotalia tosaensis Takayanagi & Saito 1962 from: Chaisson, W.P.Pearson, P.N. (1997): Planktonic foraminifer biostratigraphy at Site 925: middle Miocene–Pleistocene. In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 154 Eds: Shackleton, N.J.Curry, W.B.Richter, C.Bralower, T.J.

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Truncorotalia tosaensis Takayanagi & Saito 1962 from: Chaisson, W.P.Pearson, P.N. (1997): Planktonic foraminifer biostratigraphy at Site 925: middle Miocene–Pleistocene. In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 154 Eds: Shackleton, N.J.Curry, W.B.Richter, C.Bralower, T.J.

Anonymous: Unedited TaxonConcept data

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Species Truncorotalia tosaensis Takayanagi & Saito 1962

Discussion / Comments:

Chaisson & Pearson (1997):
The transition from T. tosaensis to T. truncatulinoides is defined by the development of an imperforate peripheral keel or band. Specimens of T. tosaensis very close to T. truncatulinoides, but with perforate peripheral bands, are observed both above the FO of the latter species in Sample 154-925B-5H-6, 65-67 cm, and below it in Sample 154-925B-8H-5, 65-67 cm. Specimens of the delicate tenuitheca morphotype are observed in Sample 154-925B-4H-6, 65-67 cm. Rare specimens of the cavernula morphotype (Kennett and Srinivasan, 1983) are observed in Samples 154-925B-1H-1, 65-67 cm, and 1H-3, 65-67.

Synonym list:

Chaisson & Pearson (1997):

1962 Truncorotalia tosaensis Takayanagi & Saito. - Takayanagi & Saito : p.81 pl. 28; fig. 11a-12c

1972 Truncorotalia tosaensis Takayanagi & Saito. - Lamb & Beard : p.56 pl. 22; fig. 1-7 pl. 23; fig. 1-2

1972 Truncorotalia tosaensis Takayanagi & Saito. - Jenkins & Orr : p.1104 pl. 33; fig. 1-3

1975 Truncorotalia tosaensis Takayanagi & Saito. - Stainforth et al. : p.413 fig. 206-207

1983 Globorotalia (Truncorotalia) tosaensis Takayangi & Saito. - Kennett & Srinivasan : p.148 pl. 34; fig. 1 pl. 35; fig. 1-3

1985 Globorotalia tosaensis tosaensis Takayanagi & Saito. - Bolli & Saunders : p.234 fig. 37.8

References:

Takayanagi,Y. and Saito,T. (1962):
Planktonic foraminifers from the Nobori Formation, Shikoku, Japan. . Science Reports of the Tohoku University Serie 2 Vol. 5 p. 67-106

Jenkins,D.G. and Orr,W.N. (1972):
Planktonic foraminiferal biostratigraphy of the eastern equatorial Pacific—DSDP Leg 9.
In: Initial Reports of the Deep Sea Drilling Project Vol. 9 Eds: Hays, J.D.et al. p. 1059-1193

Lamb,J.L. and Beard,J.H. (1972):
Late Neogene planktonic foraminifers in the Caribbean, Gulf of Mexico, and Italian stratotypes . Univ. Kansas Paleontol. Contrib. Vol. 57

Stainforth,R.M.; Lamb,J.L.; Luterbacher,H.P.; Beard,J.H. and Jeffords,R.M. (1975):
Cenozoic planktonic foraminiferal zonation and characteristics of index forms . Paleontological ContributionsArticle 62 p. 425

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 Pearson,P.N. (1997):
Planktonic foraminifer biostratigraphy at Site 925: middle Miocene–Pleistocene.
In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 154 Eds: Shackleton, N.J.Curry, W.B.Richter, C.Bralower, T.J.

Anonymous: Unedited TaxonConcept data

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