arrayname: original
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.
Asymetria asymetrica Georgescu 2012 |
Current identification:
Type species.- Asymetria asymetrica – new species. Species included. IS or FDS: Asymetria asymetrica – new. Diagnosis. Schackoinid planktic foraminifera with low trochospiral test, last-formed chambers with one distal bulbous projection, and asymmetrically developed ornamentation:smooth on the spiral side and pustulose on the umbilical one. Description. Test is low trochospiral; earlier chambers are globular, then reniform; the last-formed one to three is radially elongate and bears one distal bulbous projection. Sutures are distinct, depressed, and straight to slightly curved on both test sides. Test is convex- concave, slightly asymmetrical in edge view. Aperture is a medium high arch, extraumbilical- peripheral in position and bordered by a wide, tunnel-shaped lip; relict periapertural structures occur in the umbilical region. Chamber surface exhibits asymmetrically developed ornamentation; pustulose ornamentation is developed only on the umbilical side, whereas the spiral side is smooth. Test wall is calcitic, hyaline, simple and perforate; pores are simple, and with circular outline.
Original Description
Etymology:
Extra details from original publication
Georgescu, M. D. (2012b). Morphology, taxonomy, stratigraphic distribution and evolutionary classification of the schackoinid planktic foraminifera (late Albian- Maastrichtian, Cretaceous). In, Bailey, D. R. , Howard, S. E. , (ed.) Deep-sea marine biology, geology, and human impact. Nova Publishers, New York 1-62. gsReferences:
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Asymetria compiled by the pforams@mikrotax project team viewed: 18-4-2025
Short stable page link: https://mikrotax.org/pforams/index.php?id=132502 Go to Archive.is to create a permanent copy of this page - citation notes |
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