Daughter taxa (time control age-window is: 0-800Ma) | ||||
Oolithotus antillarum liths small (<5µm), strongly asymmetric | ||||
Oolithotus fragilis liths large (>5µm), weakly asymmetric | ||||
Oolithotus sp. Specimens which cannot be assigned to established species |
Taxonomy:
Distinguishing features:
Parent taxon (Calcidiscaceae): 2N: cells non-motile, bearing placoliths with R-unit confined to proximal shield, mostly circular.
N: cells motile, holococcolith-bearing
This taxon: Coccoliths asymmetric, tube and proximal shield offset from centre of distal shield
Farinacci & Howe catalog pages: Oolithotus *
Morphology:
Ecology & Biogeography
LITHS: placolith, asymmetric, circular, CA: closed, CSPH: equant, monomorphic, CROSS-POLARS: rim-unicyclic, V-prominent, R-prominent, |
Lith size: 3->9µm; Coccosphere size: 6->20µm; |
Geological Range:
Last occurrence (top): Extant. Data source: Total of ranges of the species in this database
First occurrence (base): within Pliocene Epoch (2.59-5.33Ma, base in Zanclean stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Cohen, C. L. D. & Reinhardt, P. (1968). Coccolithophorids from the Pleistocene Caribbean deep-sea core CP-28. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 131: 289-304. gsReferences:
Oolithotus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 6-10-2024
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=956 Go to Archive.is to create a permanent copy of this page - citation notes |
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