Taxonomy:
Distinguishing features:
Parent taxon (Palusphaera): Coccoliths without radial lath cycle; coccospheres monomorphic, all spine-bearing
This taxon: Like P. vandelii but basal disks smaller (ca 1.5 µm long), elliptical, and with narrow rim.
Farinacci & Howe catalog pages: P. probertii *
Morphology:
coccosphere
basal disk shape
disk length
base of spine
curvature of lamellar element rows
Palusphaera probertii
monomorphic
elliptical
1.2-1.8 µm
not differentiated from the rest of the spine
Dextrogyre in distal view
Laevogyre in proximal view
Palusphaera vandelii
monomorphic
circular
1.6-2.2 µm
fatter than the rest of spine and with irregular spiral structure
Dextrogryre in distal view
Laevogyre in proximal view
Rhabdosphaera xiphos
dimorphic
elliptical
1-2 µm
with flared collar
Laevogryre in distal view
Detrogyre in proximal view
Size:
LITHS: planolith, elliptical, CA: closed, plate, process, CSPH: equant, monomorphic, |
Lith size: 0->0µm; |
Geological Range:
Last occurrence (top): Extant. Data source:
First occurrence (base): within no known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source:
Plot of occurrence data:
Archontikis, O. A. & Young, J. R. (2021). A reappraisal of the taxonomy and biodiversity of the extant coccolithophore genus Palusphaera (Rhabdosphaeraceae, Prymnesiophyceae). Phycologia. 60: 589-602. gs Cros, L. & Fortuño, J. -M. (2002). Atlas of northwestern Mediterranean coccolithophores. Scientia Marina. 66: 1-186. gs Malinverno, E., Leoni , B. & Galli, P. (2022). Coccolithophore assemblages and a new species of Alisphaera from the Faafu Atoll, Maldives, Indian Ocean. Marine Micropaleontology. 172(102110): 1-16. gs Reid, F. M. H. (1980). Coccolithophorids of the North Pacific Central Gyre with notes on their vertical and seasonal distribution. Micropaleontology. 26(2): 151-176. gsReferences:
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Palusphaera probertii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 18-2-2025
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1744 Go to Archive.is to create a permanent copy of this page - citation notes |
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