Daughter taxa: (blue => in age window 0-800Ma) | Granddaughter taxa | ||||
fried egg shape, dimorphic (CFCs with large leaf-like process) | |||||
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Liths are planar disks, variable ultrastructure. Cocospheres monomorphic. The species were formerly in Crystallolithus | |||||
BCs disks, may have ridge CFCs with transverse ridge of bridge | |||||
![]() | BCs with flat rim and central protrusion, no marginal perforations, CFCs similar to BCs | ||||
Lightly calcified holococcolihs, <1µm across; typically organic scales with weak calcification |
Taxonomy:
Distinguishing features: Holococcoliths without a tube, flat or cap-shaped
Farinacci & Howe catalog pages: tubeless [no catalog entry yet]
Search data:Tags | LITHS: holococcolith, H: disk-like, H: septate, |
Metrics | Lith size: 0->0µm; Sources: |
Geological Range:
Last occurrence (top): Extant Data source: Total of range of species in this database
First occurrence (base): at base of Gelasian Stage (0% up, 2.6Ma, in Gelasian stage). Data source: Total of range of species in this database
Plot of occurrence data:
Young, J. R., Geisen, M., Cros, L., Kleijne, A., Probert, I. & Ostergaard, J. B. (2003). A guide to extant coccolithophore taxonomy. Journal of Nannoplankton Research, Special Issue. 1: 1-132. gsReferences:
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tubeless compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-12-2019
Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1444 Go to Archive.is to create a permanent copy of this page - citation notes |