Catalog - Pulleniatina okinawaensis

CATALOG OF ORIGINAL DESCRIPTIONS: Pulleniatina okinawaensis Natori 1976

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 -> P -> Pulleniatina -> Pulleniatina okinawaensis
Other pages this level: P. mayeri juvenis, P. mayeri plana, P. mayeri polygonia, P. mayeri umbilicata, P. obliquiloculata finalis, P. obliquiloculata praecursor, P. obliquiloculata trochospira, P. okinawaensis, P. praeobliquiloculata, P. praepulleniatina, P. primalis, P. semiinvoluta, P. spectabilis, P. spectabilis praespectabilis

Pulleniatina okinawaensis

Citation: Pulleniatina okinawaensis Natori 1976
Rank: species
Type specimens: GSJ Reg. No. F 5946
Type sample (& lithostrat): sample T-91, Chinen Sand of the Ryukyu Group,
Type age (chronostrat): N22, Pleistocene, in the Globorotalia (G.) truncatulinoides Partial-range-zone.
Type locality: Naha-Chinen section, Okinawa-jima; Japan
Type repository: Geological Survey of Japan

Current identification/main database link: Pulleniatina obliquiloculata (Parker & Jones, 1865)


Original Description

Test low trochospiral in early stage, becoming slightly streptospiral in later stage, biconvex. ventrally involute, dorsally completely evolute; equatorial periphery lobate, axial periphery rounded; chambers spherical in early stage, becoming somewhat laterally compressed in last whorl; chambers, about nine, arranged in about two and a half whorls, usually with 3½ to 4 chambers in last whorl. often rapidly increasing in size; umbilical area broadly depressed. slightly umbilicate; aperture interiomarginal. broad. medium arch. with no lip; apertural face often pustulate; wall calcareous. thick. pitted except for a narrow ventral area facing aperture. thickest over early chambers; surface rough with coarser pore pits in earlier stage, becoming smooth. polished in later stage; pore pits fringed with steep hexagonal interpore ridges in earlier stage. but no interpore ridges on wall of last chamber.

Size:
Maximum diameter of holotype, 0.38 mm.; maximum thickness. 0.29 mm

Etymology:

Extra details from original publication
Remarks: This taxon has a test that is trochospiral in the earlier stage and becomes slightly streptospiral in the later stage. Therefore, it may be referable to the genus Pulleniatina, described and discussed by Banner and Blow (1967) in great detail. This species differs from Pulleniatina primalis in having fewer chambers in the last whorl instead of more than four in the latter species; in having a broadly, slightly depressed umbilical area; in its coarser wall which resembles that in species of Globigerina more than that in P. primalis, and in its looser coiling of the test.

Occurrence: Common.

Stratigraphic range: The uppermost part of the Globorota!ia (G.) tumida tumida to Sphaeroidinella dehiscens dehiscens Interval-zone to the G. (G.) truncatulinoides Partial-range-zone.

Editors' Notes

References:

Natori, H. (1976). Planktonic foraminiferal biostratigraphy and datum planes in the Late Cenozooic sedimentary sequence in Okinawa-jima, Japan. Progress in Micropaleontology. 214-243. gs

Saito, T., Thompson, P. R. & Breger, D. (1976). Skeletal ultra-microstructure of some elongate-chambered planktonic foraminifera and related species. In, Takayanagi, Y. & Saito, T. (eds) Progress in Micropaleontology, Special Publication. Micropaleontology Press, The American Museum of Natural History, New York 278-304. gs


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Pulleniatina okinawaensis compiled by the pforams@mikrotax project team viewed: 29-5-2022

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