arrayname: original
Daughter taxa (time control age-window is: 0-800Ma)![]() | |||||
high laltitude species | |||||
Papposphaera arctica HOL Coccosphere elongate, varimorphic, CFCs higher and asymmetric, liths are only slightly widened distally. | |||||
Papposphaera polybotrys HOL Coccosphere, spherical, dimorphic, CFCs larger and closed distally. Liths goblet-shaped, sub-circular base, narrow stem strongly flaring distally. | |||||
Papposphaera sagittifera HOL Coccosphere spherical, varimorphic, tubes higher at flagellar pole. Coccoliths with tube, flaring distally. | |||||
Papposphaera sarion HOL Coccosphere subspherical, varimorphic, tubes higher at flagellar pole. Coccoliths with long tube, weakly flaring distally | |||||
low latitude species | |||||
Papposphaera sp. 2 (Turrisphaera phase) | |||||
Papposphaera sp. 3 (Turrisphaera phase) | |||||
![]() | ![]() | Papposphaera sp. HOL |
Taxonomy:
These holococcoliths were originally described as a discrete genus, Turrisphaera, but they are now known to be fromed on the alternate life-cycle phase of Papposphaera.
Distinguishing features:
Parent taxon (open-tube): Holococcoliths with tube, open distally (or cover recessed)
This taxon: Tower-like holococcoliths formed from hexagonal crystallite groups.
Farinacci & Howe catalog pages: Turrisphaera *
Biology & life-cycles
See also: Papposphaera ;
Search data:LITHS: holococcolith, cylindrical, elliptical, hollow, CA: vacant, process, CROSS-POLARS: V-prominent, R-prominent, |
Lith size: 1->3.5µm; Coccosphere size: 7->15µm; |
Geological Range:
Last occurrence (top): Extant. Data source: Total of ranges of the species in this database
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Manton, I., Sutherland, J. & Oates, K. (1976). Arctic coccolithophorids: two species of Turrisphaera gen. nov. from West Greenland, Alaska, and the Northwest Passage. Proceedings of the Royal Society of London. 194: 179-194. gsReferences:
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Papposphaera HOL compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-3-2025
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1008 Go to Archive.is to create a permanent copy of this page - citation notes |
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