Nannotax3 - ntax_mesozoic

Nannotax3 - ntax_mesozoic - Okkolithus Nannotax3 - ntax_mesozoic - Okkolithus

Okkolithus

Classification: ntax_mesozoic -> Holococcoliths -> Rarer genera -> Okkolithus
Sister taxa: Bifidalithus, Bilapillus, Multipartis, Munarinus, Octolithus, Okkolithus, Ottavianus, Pharus, Ramsaya, Russellia, Saepiovirgata ⟩⟨ Acuturris, Anfractus, Duocameratus, Lacunolithus-Bown, Metadoga, Nicholasia, Paulpearsonia, Petrobrasiella, Pseudoconus, Semihololithus, Stereorhabdus, Tanzanella, Thecatus, unidentified holococcoliths

Distinguishing features:
Parent taxon (Rarer genera): Less common genera
This taxon: Elliptical holococcolith with broad rim of numerous small blocks and central area of two or more blocks

Daughter taxa (time control age-window is: 0-800Ma)
				Okkolithus australis
				Okkolithus sp. Specimens not identified to species level

Taxonomy:

Citation: Okkolithus Wind & Wise in Wise & Wind, 1977

taxonomic rank: Genus

Type species: Okkolithus australis Wind & Wise in Wise & Wind, 1977

Farinacci & Howe catalog pages: Okkolithus *

Distinguishing features:
Parent taxon (Rarer genera): Less common genera
This taxon: Elliptical holococcolith with broad rim of numerous small blocks and central area of two or more blocks

Search data:

LITHS: holococcolith, elliptical, CA: pores, ca_disjunct, CROSS-POLARS: rim-unicyclic,

Lith size: 4.5->5.5µm;
Data source notes: size range of included species

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

Geological Range:
Last occurrence (top): at top of Maastrichtian Stage (100% up, 66Ma, in Danian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Campanian Stage (72.17-83.65Ma, base in Campanian stage). Data source: Total of ranges of species in this database

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
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Rarer genera

References:

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

Wise, S. W. & Wind, F. H. (1977). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 36 drilling on the Falkland Plateau, south-west Atlantic sector of the Southern Ocean. Initial Reports of the Deep Sea Drilling Project. 36(269-491): -. gs O

Okkolithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-10-2024

Taxon Search:

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