Catalog - Marginotruncana pseudomarginata

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Marginotruncana pseudomarginata

Citation: Marginotruncana pseudomarginata Neagu 2012

Type specimens: Holotype = pl1 fig 1a-c of Jirova 1956

Type age (chronostrat): Late Turonian

This species presented by Jirova (1956) as the neotype for Globotruncana linneiana marginata REUSS, 1845 (Pl. 1, Fig. 1a-c or here as a copy, Pl. I, Figs. 1-3), differs from Reuss’s initial definition (1845-1854) by:

Chambers with a globular aspect on both the umbilical and spiral sides;
The presence of two well spaced peripheral keels (a typical character for the genus Marginotruncana);
The presence of loose sutural keels on the spiral and umbilical sides;
Sometimes also loose periumbilical shoulders.

Globotruncana linneiana marginata JIROVA, 1956, NON REUSS, 1845, p. 244, Pl. 1, Fig. 1a-c, (“neotype” for Rosalina marginata REUSS, 1845; nom. vernac.).
Marginotruncana marginata (Reuss). Al SHUAIBI & PESSAGNO, 2009, p. 626; Pl. I, Figs. 7-9.

New name proposed by Neagu (2012) for the form described by Jirova (1956) as Globotruncana marginata - but which in fact was different from the type concept of Reuss (1845, 1854).

References:

Falzoni, F., Petrizzo, M. R., Jenkyns, H. C., Gale, A. S. & Tsikos, H. (2016). Falzoni, F., Petrizzo, M. R., Jenkyns, H. C., Gale, A. S. & Tsikos, H. (2016). Planktonic foraminiferal biostratigraphy and assemblage composition across the Cenomanian-Turonian boundary interval at Clot Chevalier (Vocontian Basin, SE France). Cretaceous Research. 59: 69-97. Cretaceous Research. 59: 69-97. gs

Jirova, D. (1956). Jirova, D. (1956). The genus Globotruncana in Upper Turonian and Emscherian of Bohemia. Universitas Carolina Geologica. 2: 239-255. Acta Universitatis Carolinae Geologica. 2: 239-255. gs

Neagu, T. (2012). Neagu, T. (2012). "Rosalina" marginata Reuss 1845 (Foraminifera) and its taxonomic position. Studia UBB Geologia. 57: 35-38. Studia UBB Geologia. 57: 35-38. gs

Reuss, A. E. (1845a). Reuss, A. E. (1845). Die Versteinerungen der böhmischen Kreide-formation. E. Schweizebart, Stuttgart. 1-58. E. Schweizebart, Stuttgart. 1-58. gs O

Reuss, A. E. (1854). Reuss, A. E. (1854). Beitrage zur Charakteristik der Kreideschichten in den Ostalpen, besonders im Gosauthale und am Wolfgangsee. Denkschriften der kaiserlichen Akademie der Wissenschaften zu Wien Mathematisch-Naturwissenschaftlichen Classe. 7: 1-156. Denkschriften der kaiserlichen Akademie der Wissenschaften zu Wien. 7: 1-156. gs O

CATALOG OF ORIGINAL DESCRIPTIONS: Marginotruncana pseudomarginata Neagu 2012

Marginotruncana pseudomarginata

References:

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