Classification: ntax_cenozoic -> Nannolith families inc sed -> Lithostromationaceae -> Isolithus
Sister taxa: Lithostromation, Imperiaster, Lacunolithus, Martiniaster, Isolithus

Daughter taxa: (blue => in age window 0-800Ma)
Isolithus semenenko


Citation: Isolithus Lyul'eva, 1989
Rank: Genus
Type species: Isolithus semenenko Lyul'eva, 1989

Distinguishing features: Simple triradiate nannolith

Farinacci & Howe catalog pages: Isolithus [no catalog entry yet], Isolithus [no catalog entry yet]

Search data:
TagsLITHS: nannolith-radiate, star-shaped, CROSS-POLARS: 1ou, V-prominent,
MetricsLith size: 2->9┬Ám; Segments: 3->3;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): at top of Zanclean Stage (100% up, 3.6Ma, in Zanclean stage). Data source: Total of range of species in this database
First occurrence (base): at base of Tortonian Stage (0% up, 11.6Ma, in Tortonian stage). Data source: Total of range of species in this database

Plot of occurrence data:


Lyul'eva, S. A. (1989). New Miocene and Pliocene calcareous nannofossils of the Ukraine. Dopovidi Akad. Nauk Ukrainskoi RSR Ser. B. - Geol. Khim. ta Bioi. Nauki,. 1: 10-14. gs


Isolithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 21-1-2021

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

Comments (1)

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Ines Galovic (Croatia)
I found it in the first few centimeters of Adriatic coastal lake sediments (Ba_ina Lakes).
Jeremy Young (Ucl, UK)
Interesting - I presume those are modern or Holocene sediments? Do you have photos?
Ines Galovic (Croatia)
This species is very common for restricted, shallow and alkaline environments of Miocene to recent sediments. I'm going to take some pictures for You of modern sediments (try to do my best with it) and would emailed with upper Miocene pictures.
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