Classification: ntax_cenozoic -> Holococcoliths -> fossil holococcoliths -> Octolithus
Sister taxa: Clathrolithus, Corannulus, Daktylethra, Holodiscolithus, Lanternithus, Multipartis, Octolithus, Orthozygus, Quadrilateris, Semihololithus, Varolia, Youngilithus, Zygrhablithus, Unidentified fossil holococcoliths
|Daughter taxa (time control age-window is: 0-800Ma)|
Holococccolith with four main blocks and two smaller blocks at either end.
Specimens which cannot be assigned to any established species
Citation: Octolithus Romein, 1979Rank: GenusType species: Octolithus multiplus (Perch-Nielsen, 1973) Romein, 1979 [Tetralithus]
Distinguishing features: Holoccoliths with distinct rim and cover blocks, typically eight.
Farinacci & Howe catalog pages: Octolithus *
The morphological data given here can be used on the advanced search page. See also these notes
|Tags||LITHS: holococcolith, elliptical, CROSS-POLARS: R-prominent, |
|Metrics||Lith size: 4.5->5.5µm; Segments: 5->7; |
Last occurrence (top): at base of Selandian Stage (4% up, 61.5Ma, in Selandian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Campanian Stage (0% up, 83.6Ma, in Campanian stage). Data source: Total of range of species in this database
Plot of occurrence data:
- Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
- Triangles indicate an event for which a precise placement has been suggested
- Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: fossil holococcoliths
Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs V O
Romein, A. J. T. (1979). Lineages in Early Paleogene calcareous nannoplankton. Utrecht Micropaleontological Bulletin. 22: 1-231. gs V O