CATALOG OF ORIGINAL DESCRIPTIONS: Globotruncana loefgreni Solakius and Salaj 1985

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 -> Globotruncana -> Globotruncana loefgreni
Other pages this level: << < G. lamellosa, G. lapparenti, G. lapparenti coronata, G. lapparenti depressa, G. lapparenti inflata, G. lapparenti longilocula, G. leupoldi, G. linnei angusticarenata, G. linnei bulloides, G. linnei caliciformis, G. linnei stuarti, G. linneiana obliqua, G. linneiformis, G. lobata, G. loeblichi, G. loefgreni, G. lugeoni, G. lugeoni angulata, G. lunaris, G. marginata austinensis, G. marianosi, G. mariei, G. mayaroensis, G. mexicana, G. monmouthensis, G. morozovae, G. nakkadyi, G. naqibi, G. navarroensis, G. neotricarinata, G. orientalis, > >>

Globotruncana loefgreni

Citation: Globotruncana loefgreni Solakius and Salaj 1985
Rank: Species
Type locality: Sample AD-64, Ain Mdeker, west of Enfidaville, northeastern Tunisia.
Type age: Uppermost Lower Maastrichtian
Type sample and level: upper part of the Globotruncana falsostuarti Zone. Five specimens.
Holotype Repository: Lund; Department of Geology, Historical Geology and Palaeontology, University of Lund, Sweden:
Type & figured specimens: p. 238. tf. 5(7-9). holotype, no. LO 5669 T. 7393

Current identification/main database link:


Original Description
"Diagnosis.- A Globotruncana with large, biconvex, compressed and strongly lobate double-keeled test: spiral side convex. umbilical side slightly convex; equatorial periphery subcircular, strongly lobate; final whorl with numerous subpetaloid chambers on the spiral side, ovoid on the umbilical side; umbilicus wide and surrounded by periumbilical ridges; primary aperture interiomarginal umbilical.
"Description. - Test large, spiroconvex, slightly umbilico-convex, compressed, coiled into 3½ whorls. Spiral side convex, umbilical side slightly convex. Equatorial periphery subcircular, strongly lobate and furnished with two keels. Initial chambers small and globular, followed by larger subpetaloid chambers increasing gradually in size in the direction of coiling. Final whorl composed of 8 subpetaloid chambers on spiral side, ovoid on umbilical side. Sutures on spiral side curved, raised and beaded, on umbilical side slightly curved and depressed. Umbilicus large and fairly deep, surrounded by periumbilical ridges and covered by tegilla. Primary aperture interiomarginal umbilical. Surface smooth. Wall calcareous, perforate except for imperforate keels.

Size: "Dimensions of the holotype (tf. 5(7-9)). - Max. diam. 0.87 mm; min. diam. 0.72; thickness 0.57 mm.

Extra details from original publication
"Remarks. - Globotruncana loefgreni Solakius and Salaj appears to be closely related to Globotruncana falsostuarti Sigal, 1952, from which it has probably evolved. It differs, however, in being less convex on the spiral side and in having a strongly lobate equatorial periphery."

References:

Solakius, N. & Salaj, J. (1985). Foraminiferids from the Maastrichtian of Enfidaville, northeastern Tunisia. Neues Jahrbuch für Geologie und Palaeontologie Abhandlungen. 170(2): 229-241. gs


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Globotruncana loefgreni compiled by the pforams@mikrotax project team viewed: 27-2-2020

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