Catalog - Globigerina hexagona

CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina hexagona Natland 1938

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 -> Globigerina -> Globigerina hexagona
Other pages this level: << < G. grata, G. gravelli, G. graysonensis, G. grimsdalei, G. groenlandica, G. guadalupensis, G. hagni, G. haitiensis, G. hancocki, G. haoi, G. haynesi, G. helicina, G. helicina aculeata, G. helvetojurassica, G. hevensis, G. hexagona, G. hillebrandti, G. hirsuta, G. hoelzli, G. hofkeri, G. hornibrooki, G. horrida, G. hoterivica, G. hybrida, G. inaequispira, G. inaequispira angusta, G. inaequispira incluta, G. inaequispira testata, G. inaequispira transversa, G. inaequispira universa, G. incisa> >>

Globigerina hexagona

Citation: Globigerina hexagona Natland 1938
Rank: species
Type locality: Locality 111, Lat.33° 27' 20" N., Long. 118° 19' 00" W.; depth 88'+ meters, off Long Beach, Calif., U. S. A
Type age (chronostrat): Recent
Type specimens: USNM 496185.
Type repository: Washington; USNM; Paratypes deposited in the Scripps Institution of Oceanography, La Jolla, Calif., and in the Cushman Laboratory for Foraminiferal Research, Sharon, Mass., U. S. A.

Linked specimens: USNM-22560

Current identification/main database link: Globorotaloides hexagonus (Natland, 1938)


Original Description
Test medium sized, trochoid, low spired; chambers spherical, rapidly increasing in size as added, five in eachwhorl; sutures depressed, radiate; walls with coarse reticulations forming hexagonal pits whichgivethewallsa honeycombed appearance; apertureas lightly arcuate opening between the umbilicus and the periphery at the base of the last chamber.

Size: Length 0.39 mm.; breadth 0.33 mm.; thickness 0.18 mm

Extra details from original publication
This species can be readily distinguished from G. bulloides d'0rbigny and G. quinqueloba Natland by its coarse reticulations. Although the Globigerinidae are known to be pelagic and therefore might be found anywhere on the ocean bottom, this species has been found only in the deeper samples. No reason at present can be given for this limited range."

References:

Coxall, H. K. & Spezzaferri, S. (2018). Taxonomy, biostratigraphy, and phylogeny of Oligocene Catapsydrax, Globorotaloides, and Protentelloides. In, Wade, B. S., Olsson, R. K., Pearson, P. N., Huber, B. T. & Berggren, W. A. (eds) Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication. 46(Chap 4): 79-124. gs V O

Natland, M. L. (1938). New Species of Foraminifera from off the West Coast of North America and from the Later Tertiary of the Los Angeles Basin. Bulletin of the Scripps Institute of Oceanography, Tech. Ser. 4(5): 137-164. gs

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Globigerina hexagona compiled by the pforams@mikrotax project team viewed: 16-1-2022

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