Quadrum eneabrachium


Classification: Mesozoic -> Braarudosphaerales -> Polycyclolithaceae -> Quadrum -> Quadrum eneabrachium
Sister taxa: Q. gartneri, Q. svabenickae, Q. bengalensis, Q. intermedium, Q. eptabrachium, Q. octobrachium, Q. eneabrachium, Q. giganteum, Q. sp.,

Distinguishing features: Quadrum with 9 elements per cycle


Taxonomy:

Citation: Quadrum eneabrachium Varol, 1992
Rank: Species

Farinacci & Howe catalog pages: Quadrum eneabrachium * , ,

Distinguishing features: Quadrum with 9 elements per cycle

Geological Range:
Last occurrence (top): within Santonian Stage (83.64-86.26Ma, top in Santonian stage). Data source: Burnett 1998
First occurrence (base): within Middle Albian Substage (107.59-110.22Ma, base in Albian stage). Data source: Burnett 1998

Plot of occurrence data:

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Quadrum eneabrachium, synonyms included - Quadrum eneabrachium; space-time plot :: Samples map :: Parent: Quadrum

    References:

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

    Varol, O. (1992b). Taxonomic revision of the Polycyclolithaceae and its contribution to Cretaceous biostratigraphy. Newsletters on Stratigraphy. 27(93-127): -. gs


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    Quadrum eneabrachium compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 21-7-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10968 Go to Archive.is to create a permanent copy of this page - citation notes



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