Isthmolithus rhenanus

Classification: ntax_cenozoic -> Zygodiscales -> Zygodiscaceae -> Isthmolithus -> Isthmolithus rhenanus
Sister taxa: I. recurvus, I. rhenanus, I. unipons, I. sp.


Citation: Isthmolithus rhenanus Martini, 1973
Rank: Species

Distinguishing features: Isthmolithus with single, broad, tranverse bar.

Farinacci & Howe catalog pages: I. rhenanus *

Size: Length 5-7 microns.

Search data:
TagsLITHS: murolith, elliptical, quadrate, CA: ca_conjunct, bar, CROSS-POLARS: rim-unicyclic, V-prominent,
MetricsLith size: 5->7┬Ám;
Data source notes: lith size from OD
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP22 zone (32.02-32.92Ma, top in Rupelian stage). Data source: Perch-Nielsen 1985b
First occurrence (base): within NP21 zone (32.92-34.44Ma, base in Priabonian stage). Data source: Shamrock & Watkins 2012

Plot of occurrence data:


Martini, E. (1973). Nannoplankton-Massenvorkommoen in den Mittleren Pechelbronner Schichten (Unter Oligozn). Oberrhein. geol. Abh. 22(1-2): 1-12. gs

Perch-Nielsen, K. (1985a). Cenozoic calcareous nannofossils. In, Bolli, H. M., Saunders, J. B. & Perch-Nielsen, K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge 427-555. gs

Shamrock, J. L. & Watkins, D. K. (2012). Eocene calcareous nannofossil biostratigraphy and community structure from Exmouth Plateau, Eastern Indian Ocean (ODP Site 762). Stratigraphy. 9(1): 1-11. gs


Isthmolithus rhenanus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-4-2021

Taxon Search:
Advanced Search

Short stable page link: Go to to create a permanent copy of this page - citation notes

Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
Captcha Image
Powered by Commentics