Catalog - Globorotalia pseudomayeri Catalog - Globorotalia pseudomayeri

CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia pseudomayeri Bolli 1957

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.


Higher levels: pf_cat -> G -> Globorotalia -> Globorotalia pseudomayeri
Other pages this level: << < G. petaliformis, G. planocompressa, G. planocompressa evoluta, G. planocompressa planocompressa, G. planoconica, G. planoconvexa, G. platispira, G. pliozea, G. praemargaritae, G. praemenardii, G. praemiocenica, G. praenartanensis, G. praepseudomenardii, G. pseudochapmani, G. pseudocrassa, G. pseudomayeri, G. pseudomenardii, G. pseudomiocenica, G. pseudopachyderma, G. pseudoscitula, G. pseudoscitula elongata, G. pseudospinulosa, G. pshadae, G. pumilio, G. puncticulata padana, G. puncticulata puncticuloides, G. pusilla laevigata, G. pusilla mediterranica, G. pusilla pusilla, G. quadraria, G. quadrata> >>

Globorotalia pseudomayeri

Citation: Globorotalia pseudomayeri Bolli 1957
taxonomic rank: Species
Type specimens: Holotype (USNM P5737)
Type age (chronostrat): Hantkenina aragonensis zone
Type locality: Locality: Holotype (USNM P5737) from the Hantkenina aragonensis zone, Navet formation; in upper part of small ravine between mileposts 12 1/4 and 12 1/2 of the Brasso-Tamana Road and the Navet River (see text-fig. 25) ; sample K 8817 (TTOC 177758).
Type repository: Washington; USNM

Linked specimens: USNM-5737

Current identification/main database link: Turborotalia pomeroli (Toumarkine & Bolli 1970)


Original Description

Shape of test low trochospiral; equatorial periphery slightly lobate; axial periphery rounded. Wall calcareous, perforate, surface very finely pitted. Chambers spherical, 10 - 12, arranged in about 2 1/2 whorls; the 4- 5 chambers of the last whorl increase rapidly in size. Sutures on spiral side curved or oblique in early portion; later radial, depressed; on umbilical side radial, depressed. Umbilicus narrow. Aperture a medium to low arch, with or without a faint lip; interiomarginal, umbilical-extraumbilical. Coiling random.

Size:
Largest diameter of holotype 0.4 mm.

Extra details from original publication
Stratigraphic range: Hantkenina aragonensis zone, Navet formation.

Remarks: Globorotalia pseudomayeri, new species, is morphologically very close to G. opima nana Bolli
and G. mayeri Cushman and Elliisor. It differs from the former in that the chambers of the last whorl
increase more rapidly in size. The last whorl consists of 4 to 4 1/4 chambers, whereas in G. mayeri it has 5 or 6.
G. pseudomayeri is restricted to the Hantkenina aragonensis zone of the Navet formation, whereas G. opima nana is found from the Truncorotaloides rohri zone, Navet formation to the Globigerina ciperoensis ciperoensis zone, Cipero formation. Globorotalia mayeri
is restricted to the Cipero formation and lower part of the Lengua formation.

References:

Bolli, H. M. (1957a). Planktonic foraminifera from the Eocene Navet and San Fernando formations of Trinidad. In, Loeblich, A. R. , Jr., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli, E. & Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin . 215: 155-172. gs

Bolli, H. M., Loeblich, A. R. & Tappan, H. (1957). Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae and Globotruncanidae. In, Loeblich, A. R. , Jr., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli, E. & Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin . 215: 3-50. gs


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Globorotalia pseudomayeri compiled by the pforams@mikrotax project team viewed: 24-5-2024

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