Daughter taxa (time control age-window is: 0-800Ma) | ||||
Aliculosphaera subantarctica large species with prominent wing |
Taxonomy:
Distinguishing features:
Parent taxon (Coccolith genera inc sed): Heterococcolith genera which cannot be assigned to any family
This taxon: Placolith with strongly distal shield, showing high birefringence
Farinacci & Howe catalog pages: Aliculosphaera *
Morphology:
Ecology & Biogeography
LITHS: placolith, asymmetric, elliptical, CA: vacant, CROSS-POLARS: R-prominent, rim-unicyclic, |
Lith size: 10->15µm; Data source notes: lith size from my obs [JRY unpubl] |
Geological Range:
Last occurrence (top): at top of Early Oligocene Sub-Epoch (100% up, 28.1Ma, in Rupelian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Early Oligocene Sub-Epoch (28.09-33.89Ma, base in Rupelian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Aubry, M. -P. & Bord, D. (2009). Reshuffling the cards in the photic zone at the Eocene/Oligocene boundary. In, Koeberl, C. & Montanari, A. (eds) The Late Eocene Earth—Hothouse, Icehouse, and Impacts. Geological Society of America, Special Papers . 452: 279-301. gsReferences:
Aliculosphaera compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 14-12-2024
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=24 Go to Archive.is to create a permanent copy of this page - citation notes |
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