Neocrepidolithus


Classification: Mesozoic -> Eiffellithales -> Chiastozygaceae -> Neocrepidolithus
Sister taxa: Amphizygus, Archaeozygodiscus, Gorkaea, Placozygus, Reinhardtites, Tranolithus, Zeugrhabdotus, Staurolithites, Diadorhombus, Rhabdophidites, Ahmuellerella, Bukrylithus, Heteromarginatus, Misceomarginatus, Monomarginatus, Neocrepidolithus, Vacherauvillius, Chiastozygus, Braloweria, Clepsilithus, Crepidolithus, Loxolithus, Tubirhabdus,

Distinguishing features: Murolith (loxolith) coccoliths with broad, high rim and narrow or closed central-area, which may be spanned by bars.


Daughter taxa: (blue => in age window 0-800Ma)
Unicyclic Neocrepidolithus with closed central area.
Neocrepidolithus with narrow central area filled with an axial cross. Clearly bicyclic in LM.
Large (holotype 8µm) species of Neocrepidolithus with thick inner cycle of elements, and a narrow, open, central area.

Specimens not identified to species level

Taxonomy:

Citation: Neocrepidolithus Romein, 1979
Rank: Genus
Type species: Crepidolithus neocrassus Perch-Nielsen, 1968

Farinacci & Howe catalog pages: Neocrepidolithus *

Distinguishing features: Murolith (loxolith) coccoliths with broad, high rim and narrow or closed central-area, which may be spanned by bars.

Geological Range:
Last occurrence (top): at base of Selandian Stage (4% up, 61.5Ma, in Selandian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Turonian Stage (0% up, 93.9Ma, in Turonian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

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

Romein, A. J. T. (1979). Lineages in Early Paleogene calcareous nannoplankton. Utrecht Micropaleontological Bulletin. 22: 231-. gs


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

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10790 Go to Archive.is to create a permanent copy of this page - citation notes



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