CATALOG OF ORIGINAL DESCRIPTIONS: Globigerina oxfordiana Grigelis 1958
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Citation: Globigerina oxfordiana Grigelis 1958taxonomic rank: SpeciesType specimens: No. 145Type age (chronostrat): Lower OxfordianType locality: Village of Jotiya, Shakyai region, LithuaniaType repository: Vilnius State University - Collections of the Department of Geology
Original Description Test trochoid, small, oval in outline, with a lobate contour. On the dorsal side two whorls of the spire are visible, with four chambers in each that adjoin but do not overlap one another. First, early whorl on the dorsal side rises somewhat above the second, later one. Chambers increase gradually in size as added. Sutures linear, straight, deep. On the ventral side the chambers of the last whorl are visible. In the center here is a small umbilicus. Aperture a semilunate opening at the umbilical margin of the last chamber, furnished with a small lip. Wall perforate, rough, calcareous.
References:
Grigelis, A. A. (1958). Globigerina oxfordiana sp. n. – an occurrence of Globigerina in the Upper Jurassic deposits of Lithuania. Nauchnyye Doklady Vysshey Shkoly, Geologo-Geograficheskei Nauki. 1958(3): 109-111. gs
Globigerina oxfordiana compiled by the pforams@mikrotax project teamviewed: 16-10-2024
holotype illus-411.jpg
holotype illus-411.jpg
