Daughter taxa (time control age-window is: 0-800Ma) | ||||
Pedinocyclus gibbsiae Medium to large, circular coccoliths with broad rim, narrow, bright inner tube cycle (in XPL) and open central-area. Rim elements are strongly inclined. | ||||
Pedinocyclus larvalis Large circular coccoliths with broad, flat shield and rim elements joined along inclined sutures. Shield is dark in XPL but a narrow, brighter tube cycle is usually visible. | ||||
Geminilithella okayi | ||||
Pedinocyclus sp. Specimens which cannot be assigned to any established species |
Taxonomy:
Distinguishing features:
Parent taxon (Coccolith genera inc sed): Heterococcolith genera which cannot be assigned to any family
This taxon: Typically circular planolith coccoliths with broad, flat shield and rim elements joined along inclined sutures. Shield is dark in XPL but a narrow, brighter tube cycle may be present.
Farinacci & Howe catalog pages: Pedinocyclus * , Leptodiscus
Size:
LITHS: planolith, circular, CA: vacant, CROSS-POLARS: rim-unicyclic, V-prominent, R-prominent, |
Lith size: 5->14µm; |
Geological Range:
Last occurrence (top): at top of NP25 zone (100% up, 24.4Ma, in Chattian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within NP11 zone (53.70-54.17Ma, base in Ypresian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Bukry, D. & Bramlette, M. N. (1969b). Some new and stratigraphically useful calcareous nannofossils of the Cenozoic. Tulane Studies in Geology. 7: 131-142. gs Bukry, D. & Bramlette, M. N. (1971). Validation of Pedinocyclus and Quinquerhabdus new calcareous nannoplankton genera. Tulane Studies in Geology and Paleontology. 8: 122-122. gs References:
Pedinocyclus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 11-10-2024
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1030 Go to Archive.is to create a permanent copy of this page - citation notes |
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