CATALOG OF ORIGINAL DESCRIPTIONS: Sphaeroidinellopsis Banner & Blow 1959
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.
Original Description Test trochoid throughout life; chambers regularly enlarging, subglobular, or subreniform, or showing a tendency to become radially elongate in the adult, or embracing. Wall structure similar to that of Sphaeroidinella, but in some species the cortex is less strongly developed. Primary aperture interiomarginal, intraumbilical, a low arch or slit, furnished with a smooth or crenulate lip. No supplementary apertures are present. Size: Etymology: Extra details from original publication Remarks. This genus is distinguished from Sphaeroidinella by its lack of supplementary sutural apertures in the adult, notwithstanding that in some species (e.g. S. seminulina kochi (Caudri)) the dorsal sutures are very deeply incised. 'Sphaeroidinella' senni Beckmann is of doubtful generic position, but lacks a cortex and thickened apertural lips and does not belong to the Sphaeroidinellinae. We consider that Globigerina seminulina Schwager 1866 (= S. disjuncta Finlay 1940), Globigerina kochi Caudri 1934 (= S. rutschi Cushman and Renz 1941 [part, holotyp::] = G. grimsdalei Keijzer 1945), and S.multiloba LeRoy 1944 belong to Spltaeroidinellopsis. [Banner & Blow 1959] Editors' Notes
References:
Banner, F. T. & Blow, W. H. (1959). The classification and stratigraphical distribution of the Globigerinaceae. Palaeontology. 2(1): 1-27. gsVO
Sphaeroidinellopsis compiled by the pforams@mikrotax project teamviewed: 2-2-2023
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