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.
Current identification/main database link: Marginotruncana sigmoconcavata (Scheibnerova 1963)
Original Description
Description of the test: Trochospirally coiled test with four chambers in the final whorl. Chambers are strongly overlapping. The umbilical side of the test rather convex, the spiral one concave or flattened. Periphery with one distinct keel. The aperture interiomarginal, accessory apertures with lips at the adumbilical portions of the last chambers. Surface smooth.
Size:
Etymology:
Extra details from original publication
Scheibnerova, V. (1963b). Some new informations on the Cretaceous of the klippen belt of West Carpathians. Geologiscky Zbornik -Geologica Carpathica. 14(2): 221-268. gs References:
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Globotruncana sigmoconcavata compiled by the pforams@mikrotax project team viewed: 12-2-2025
Short stable page link: https://mikrotax.org/dinotax/index.php?id=131497 Go to Archive.is to create a permanent copy of this page - citation notes |
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Comments (5)
It is pretty cryptic indeed. Both species if synonyms should be accepted as Marginotruncana sigmoconcavata (Scheibnerova, 1963) since Porthault's G. paraconcavata was described in 1970 (inversed priority).
Cheers François
actually that is not really very cryptic - I guess it was a bit late at night when I made my reply!. I will add it to the growing list for review by Brian Huber and Marie-Rose Petrizzo when they get back from the IOPD expedition.
on review sigmoconcavata has been removed from the synonymy of paraconcavata
Pb of priority: Marginotruncana sigmoconcavata?
sorry, that is a bit too cryptic for me. Can you explain in slightly more detail.
Cheers Jeremy