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
Size:
Etymology:
Extra details from original publication
Editors' Notes
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:
 |
Asymetria compiled by the pforams@mikrotax project team viewed: 6-2-2023
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 |
Comments
(0)