Nannotax3 - ntax_cenozoic - Isolithus Nannotax3 - ntax_cenozoic - Isolithus


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

Daughter taxa (time control age-window is: 0-800Ma)
Isolithus kovacii

Isolithus pavelicii

Isolithus semenenkoi


Citation: Isolithus Lyul'eva, 1989
taxonomic rank: Genus
Type species: Isolithus semenenkoi Lyul'eva, 1989

Distinguishing features:
Parent taxon (Lithostromationaceae): Large (10-20µm) triangular to stellate nannoliths with porous structure formed from small crystallites. In xpl behave as single crystal unit with low birefringence
This taxon: Simple triradiate nannolith

Farinacci & Howe catalog pages: Isolithus *

Search data:
LITHS: nannolith-radiate, star-shaped, CROSS-POLARS: 1ou, V-prominent,
Lith size: 2->9µm; 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 Early Pliocene Sub-Epoch (100% up, 3.6Ma, in Piacenzian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Late Miocene Sub-Epoch (5.33-11.62Ma, base in Tortonian stage). Data source: Total of ranges 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. 1: 10-14. gs


Isolithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 21-7-2024

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Comments (3)

Ines Galovic(Croatia)
I found it in the first few centimeters of Adriatic coastal lake sediments (Ba_ina Lakes).
Jeremy Young(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.