Nannotax3 - ntax_cenozoic - Chiphragmalithus barbatus

Chiphragmalithus barbatus

Classification: ntax_cenozoic -> Zygodiscales -> Zygodiscaceae -> Chiphragmalithus -> Chiphragmalithus barbatus
Sister taxa: C. acanthodes, C. armatus, C. barbatus, C. calathus, C. muzylevii, C. vandenberghei, C. sp.

PN71 KDansk pl39-01.JPG
PN71 KDansk pl39-02.JPG
Perch-Nielsen 1967 pl5 15.jpg

Taxonomy:

Citation: Chiphragmalithus barbatus Perch-Nielsen, 1967

Rank: Species

Variants: Chiphragmalithus altinlii Varol (1989) - "distinguished from C. barbatus by having a rim which does not exceed the limit of the wall" the meaning of this sentence is not immediately obvious but possibly indicates that in C. altinii there is no proximal flange, whereas there is one in C. barbatus. Both forms are confined to zone NP12.

Distinguishing features: Subcircular to square Chiphragmalithus.

Farinacci & Howe catalog pages: C. barbatus * , C. altinlii *

Search data:

Tags	LITHS: murolith, circular, quadrate, CA: diagonal cross, CROSS-POLARS: rim-unicyclic, V-prominent,
Metrics	Lith size: 6->8µm; Data source notes: lith size from ODs

The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP12 zone (50.50-53.70Ma, top in Ypresian stage). Data source: Perch-Nielsen 1985b
First occurrence (base): within NP11 zone (53.70-54.17Ma, base in Ypresian stage). Data source: Shamrock & Watkins 2012

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Taxon plotted: Chiphragmalithus barbatus, synonyms included - Chiphragmalithus barbatus;
See also space-time plot :: Samples map :: Parent: Chiphragmalithus

References:

Perch-Nielsen, K. (1967b). Nannofossilien aus dem Eozan von Danemark. Eclogae Geologicae Helvetiae. 60: 19-32. gs V O

Perch-Nielsen, K. (1971c). Elektronenmikroskopische untersuchungen an Coccolithen und verwandten Formen aus dem Eozan von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab. 18(3): 1-76. gs

Perch-Nielsen, K. (1985a). Cenozoic calcareous nannofossils. In, Bolli, H. M., Saunders, J. B. & Perch-Nielsen, K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge 427-555. gs

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

Varol, O. (1989b). Eocene calcareous nannofossils from Sile (northwest Turkey). Revista Española de Micropaleontología. 21: 273-320. gs V O

Chiphragmalithus barbatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 19-4-2021

Taxon Search:

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=284 Go to Archive.is to create a permanent copy of this page - citation notes

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