Eprolithus apertior


Classification: Mesozoic -> Braarudosphaerales -> Polycyclolithaceae -> Eprolithus -> Eprolithus apertior
Sister taxa: E. rarus, E. moratus, E. octopetalus, E. floralis, E. apertior, E. antiquus, E. sp.,

Distinguishing features: Eprolithus with nine wall-elements and tall wall


Taxonomy:

Citation: Eprolithus apertior Black, 1973
Rank: Species
Notes & discussion: Originally described as “resembling E. floralis very closely” (Black, 1973), and may represent a variant.

Farinacci & Howe catalog pages: Eprolithus apertior *

Distinguishing features: Eprolithus with nine wall-elements and tall wall


Morphology remarks: The wide central area is spanned by a diaphragm.

Geological Range:
Notes: LAD is earlier at low latitudes - in UC7 (Burnett 1998)
Last occurrence (top): in upper part of UC9a subzone (70% up, 91Ma, in Turonian stage). Data source: Burnett 1998, fig. 6.3
First occurrence (base): in upper part of BC18 zone (75% up, 125.9Ma, in Aptian stage). Data source: Bown et al. 1998, fig. 5.3

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: Eprolithus apertior, synonyms included - Eprolithus apertior;
  • space-time plot :: Samples map :: Parent: Eprolithus

    References:

    Black, M. (1973). British Lower Cretaceous Coccoliths. I-Gault Clay (Part 2). Palaeontographical Society Monograph. 127: 49-112. gs

    Bown, P. R., Rutledge, D. C., Crux, J. A. & Gallagher, L. T. (1998). Early Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 86-131. gs

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


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    Eprolithus apertior compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 7-12-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10433 Go to Archive.is to create a permanent copy of this page - citation notes



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