Pedinocyclus


Classification: ntax_cenozoic -> Coccolith families inc sed -> Coccolith genera inc sed -> Pedinocyclus
Sister taxa: Aliculosphaera, Biantholithus, Camuralithus, Centumgemina, Ellipsolithus, Gladiolithus, Ilselithina, Leesella, Pedinocyclus, Petasus

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:

Citation: Pedinocyclus Bukry & Bramlette, 1971
Rank: Genus
Type species: Pedinocyclus larvalis (Bukry & Bramlette, 1969) [Leptodiscus]
Synonyms: Leptodiscus Bukry & Bramlette (1969) - it was renamed Pedinocyclus since the name Leptodiscus was already used for a dinoflagellate.

Distinguishing features: 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: Medim to large size (5-14 µm)

Search data:
TagsLITHS: planolith, circular, CA: vacant, CROSS-POLARS: rim-unicyclic, V-prominent, R-prominent,
MetricsLith size: 5->14µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): in upper part of Chattian Stage (73% up, 24.4Ma, in Chattian stage). Data source: Total of range of species in this database
First occurrence (base): in lower part of Ypresian Stage (22% up, 54.2Ma, in Ypresian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bukry, D. & Bramlette, M. N. (1969b). Some new and stratigraphically useful calcareous nannofossils of the Cenozoic. Tulane Studies in Geology. 7: 131-142. gs V O

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 V O


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Pedinocyclus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-2-2021

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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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