CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina hexagona Natland 1938
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Citation: Globigerina hexagona Natland 1938Rank: speciesType specimens: USNM 496185. Type age (chronostrat): RecentType locality: Locality 111, Lat.33° 27' 20" N., Long. 118° 19' 00" W.; depth 88'+ meters, off Long Beach, Calif., U. S. AType 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.
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 Etymology: 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." Editors' Notes
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. gsVO
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
Globigerina hexagona compiled by the pforams@mikrotax project teamviewed: 8-12-2022
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