Taxonomy:
Distinguishing features:
Parent taxon (Polycrater phase): Phase with quadrate, cup-like nannoliths
This taxon: Distal cup with two lenticular openings
Farinacci & Howe catalog pages:
Morphology:
Biology & life-cycles
LITHS: nannolith-radiate, quadrate, CA: ca_conjunct, pores, closed, CSPH: equant, monomorphic, CROSS-POLARS: V-prominent, |
Lith size: 0.6->0.9µm; Segments: 4->4; Coccosphere size: 5->11µm; Liths per sphere: 200->750 Data source notes: csph & lith length from Cros & Fortuño 2002 & illustrated specs |
Geological Range:
Last occurrence (top): Extant. Data source: present in the plankton (Young et al. 2003)
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: [JRY rough estimate]
Plot of occurrence data:
Cros, L. & Fortuño, J. -M. (2002). Atlas of northwestern Mediterranean coccolithophores. Scientia Marina. 66: 1-186. gs Kleijne, A., Jordan, R. W., Heimdal, B. R., Samtleben, C., Chamberlain, A. H. L. & Cros, L. (2002). Five new species of the coccolithophorid genus Alisphaera (Haptophyta) with notes on their distribution, coccolith structure and taxonomy. Phycologia. 40(6): 583-601. gs 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. S1: 1-132. gs References:
Alisphaera gaudii POL compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-9-2024
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=30 Go to Archive.is to create a permanent copy of this page - citation notes |
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