CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina subsphaerica Subbotina 1947
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Citation: Globigerina subsphaerica Subbotina 1947Rank: SpeciesDescribed on page(s) : 108-109Type specimens: pl 5 f23-28Type locality: G. ex gr. canariensis Zone, Assu River section, N CaucasusType repository: St. Petersburg, Russia; VNIGRI
Original Description Test small, nearly spherical; viewed from the ventral side, it very often resembles a slightly bursting chestnut. Test consists of three or three and one-half whorls, of which the first two are disproportionately small as compared with the final whorl. In the final whorl there are five to six chambers gradually increasing in size. In the middle of the ventral side there is a small umbilicus. The chambers are trapezoidal on the dorsal side, and triangular on the ventral side; they have a smooth outer surface and adhere closely to one another. Septal sutures depressed, slightly curved in the direction of coiling. Aperture semi-rounded, occupying approximately one-third of the distance between the umbilicus and the periphery. Wall reticulate, finely porous. Size: Average dimensions: Greatest diameter 0.27 mm.; height 0.25 mm. Etymology: Extra details from original publication
Editors' Notes
References:
Subbotina, N. N. (1947). Danian and Paleogene foraminifera of the northern Caucasus. Vses Neft Nauchno-Issled Geol-Razved Inst. (VNIGRI), Microfauna of the oil fields of the USSR. 1947: 39-160. gsVO
Globigerina subsphaerica compiled by the pforams@mikrotax project teamviewed: 28-1-2023
holotype illus_948.jpg
holotype illus_948.jpg
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