Nannotax3 - ntax_cenozoic - Neocrepidolithus cohenii

Neocrepidolithus cohenii

Classification: ntax_cenozoic -> Mesozoic Survivors -> Chiastozygaceae -> Neocrepidolithus -> Neocrepidolithus cohenii
Sister taxa: N. cohenii, N. cruciatus, N. dirimosus, N. fossus, N. grandiculus, N. neocrassus, N. sp.

PN81fig2-11.JPG
PN81fig2-15.JPG
PN81pl6-02.JPG
Burnett1998-6-15-03.jpg
PN81pl6-03.JPG

Taxonomy:

Citation: Neocrepidolithus cohenii (Perch-Nielsen, 1968) Perch-Nielsen, 1984

Rank: Species

Basionym: Crepidolithus cohenii Perch-Nielsen, 1968

Synonyms: Neocrepidolithus biskayae Perch-Nielsen, 1981 - this appears to be more or less identical to N. cohenii [my interpretation - JRY 2016]

Distinguishing features: Unicyclic Neocrepidolithus with closed central area.

Farinacci & Howe catalog pages: C. cohenii * , N. biskayae *

Search data:

Tags	LITHS: murolith, elliptical, CA: closed, CROSS-POLARS: rim-unicyclic, R-prominent,
Metrics	Lith size: 4->7µm; Data source notes: lith size from OD and illustrated specs

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

Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Perch-Nielsen 1985b
First occurrence (base): within Maastrichtian Stage (66.04-72.05Ma, base in Maastrichtian stage). Data source: Perch-Nielsen 1985

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: Neocrepidolithus cohenii, synonyms included - Neocrepidolithus biskayae; Neocrepidolithus cohenii;
See also space-time plot :: Samples map :: Parent: Neocrepidolithus

References:

Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs V O

Perch-Nielsen, K. (1968c). Der Feinbau und die Klassifikation der Coccolithen aus dem Maastrichtien von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab. 16: 1-96. gs

Perch-Nielsen, K. (1981b). New Maastrichtian and Paleocene calcareous nannofossils from Africa, Denmark, and USA and the Atlantic, and some Paleocene lineages. Eclogae Geologicae Helvetiae. 74(3): 831-863. gs V O

Perch-Nielsen, K. (1984b). Validation of new combinations. INA Newsletter. 6(1): 42-46. gs V O

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