Pedinocyclus larvalis

Classification: ntax_cenozoic -> Coccolith families inc sed -> Coccolith genera inc sed -> Pedinocyclus -> Pedinocyclus larvalis
Sister taxa: P. gibbsiae, P. larvalis, G. okayi, P. sp.


Citation: Pedinocyclus larvalis (Bukry & Bramlette, 1969) Loeblich & Tappan, 1973
Rank: Species
Basionym: Leptodiscus larvalis Bukry & Bramlette, 1969
Taxonomic discussion: Originally described as Leptodiscus larvalis by Bukry & Bramlette 1969. The generic name was changed to Pedinocyclus by Bukry & Bramlette (1971) but the combination Pedinocyclus larvalis was not validly proposed in that publication and so was validated by Loeblich & Tappan (1973)

Distinguishing features: 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.

Farinacci & Howe catalog pages: L. larvalis *

Search data:
TagsLITHS: planolith, circular, CA: vacant, CROSS-POLARS: rim-unicyclic, V-prominent, R-prominent,
MetricsLith size: 6->14µm;
Data source notes: lith size from OD & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP23 zone (29.62-32.02Ma, top in Rupelian stage). Data source: [PRB rough estimate]
First occurrence (base): within NP11 zone (53.70-54.17Ma, base in Ypresian stage). Data source: [PRB rough estimate]

Plot of occurrence data:


Bown, P. R. & Dunkley Jones, T. (2012). Calcareous nannofossils from the Paleogene equatorial Pacific (IODP Expedition 320 Sites U1331-1334). Journal of Nannoplankton Research. 32(2): 3-51. gs V O

Bown, P. R. (2005d). Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). Journal of Nannoplankton Research. 27(1): 21-95. gs V O

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

de Kaenel, E. & Villa, G. (1996). Oligocene-Miocene calcareous nannofossil biostratigraphy and paleoeecology from the Iberian Abyssal Plain. Proceedings of the Ocean Drilling Program, Scientific Results. 149: 79-145. gs V O

Dunkley Jones, T., Bown, P. R. & Pearson, P. (2009). Exceptionally well preserved upper Eocene to lower Oligocene calcareous nannofossils (Prymnesiophycidae) from the Pande Formation (Kilwa Group), Tanzania. Journal of Systematic Palaeontology. 7(4): 359-411. gs

Jones, A. P. & Dunkley Jones, T. (2020). Middle Eocene to Early Oligocene calcareous nannofossils from the Nanggulan Formation, Java, Indonesia. Journal of Nannoplankton Research. 30(1): 57-79. gs V O

Loeblich, A. R. & Tappan, H. (1973). Annotated index and bibliography of the calcareous nannoplankton VII. Journal of Paleontology. 47(4): 715-759. gs

Perch-Nielsen, K. (1977a). Albian to Pleistocene calcareous nannofossils from the Western South Atlantic, DSDP Leg 39. Initial Reports of the Deep Sea Drilling Project. 39: 699-823. gs V O

Shamrock, J. L. & Watkins, D. K. (2012). Eocene calcareous nannofossil biostratigraphy and community structure from Exmouth Plateau, Eastern Indian Ocean (ODP Site 762). Stratigraphy. 9(1): 1-11. gs


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

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