Nannotax3 - ntax_main - Pemma sp. Nannotax3 - ntax_main - Pemma sp.

Pemma sp.


Classification: ntax_main -> Braarudosphaerales -> Braarudosphaeraceae -> Pemma -> Pemma sp.
Sister taxa: P. basquense, P. bybelliae, P. papillatum, P. rotundum, P. stradneri, P. uncinata, P. sp.

Taxonomy:

Citation: Pemma sp.
Taxonomic rank: generic level id

Distinguishing features:
Parent taxon (Pemma): Pentaliths with a central depression/perforation in each segment; often producing elevated, robust structures that are commonly observed in side view.
This taxon: Specimens which cannot be assigned to any established species

Farinacci & Howe catalog pages:

Search data:
Lith size: 0->0µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP21 zone (32.92-34.44Ma, top in Rupelian stage). Data source: same as genus
First occurrence (base): within NP14b subzone (46.29-47.84Ma, base in Lutetian stage). Data source: same as genus

Plot of occurrence data:

References:

Bown, P. R. (2005d). Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). Journal of Nannoplankton Research. 27(1): 21-95. gs O

Bybell, L. (1975). Middle Eocene calcareous nannofossils at Little Stave Creek, Alabama. Tulane Studies in Geology and Paleontology. 11(4): 177-247. gs O

Steurbaut, E. & Nolf, D. (2021). The Mont-des-Récollets section (N France): a key site for the Ypresian-Lutetian transition at mid-latitudes – reassessment of the boundary criterion for the base-Lutetian GSSP. Geodiversitas. 43(11): 311-363. gs


nannotaxlogo400px

Pemma sp. compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-5-2025

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1039 Go to Archive.is to create a permanent copy of this page - citation notes



Add Comment

* Required information
Captcha Image

Comments

No comments yet. Be the first!