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.
Pseudoclavihedbergella chevaliensis Falzoni et al. 2016 |
Current identification:
See also: Hedbergella amabilis - type species;
Original Description
Description.– Tests are low trochospiral, with chambers that gradually increase in size. Chambers of the juvenile stage globular; the last formed ones are radially elongate and petaloid in shape, with the long axis perpendicular to or at a high angle (> 75°) to the previous whorl. Sutures are distinct and depressed, often limbated due to the lack of chamber overlapping. Periphery broadly rounded, simple or, rarely, with a peripheral band of low pore density and smaller pore size on the earlier chambers of the final whorl. Aperture is a low to medium high arch, umbilicalperipheral in position and bordered by an imperforate lip; relict periapertural structures and apertures can be present in the umbilicus. Chamber surface ornamented with dome-like scattered pustules, denser on the earlier chambers. Test wall calcitic, hyaline and perforate; pores show gradual increase in size along the lineage.
Etymology:
Extra details from original publication
Species included.
Stratigraphical range.– Upper Albian-lower Turonian (from the P. appenninica Biozone to H. helvetica Biozone). Geographic distribution.– Cosmopolitan.
Georgescu, M. D. (2009d). Upper Albian-lower Turonian non-schackoinid planktic foraminifera with elongate chambers: morphology reevaluation, taxonomy and evolutionary classification. Revista Española de Micropaleontología. 41: 255-293. gs References:
Pseudoclavihedbergella compiled by the pforams@mikrotax project team viewed: 14-9-2024
Short stable page link: https://mikrotax.org/pforams/index.php?id=132049 Go to Archive.is to create a permanent copy of this page - citation notes |
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