Neocrepidolithus


Classification: Mesozoic -> Eiffellithales -> Chiastozygaceae -> Neocrepidolithus
Sister taxa: Amphizygus, Archaeozygodiscus, Gorkaea, Placozygus, Reinhardtites, Tranolithus, Zeugrhabdotus, Chiastozygus, Staurolithites, Diadorhombus, Rhabdophidites, Ahmuellerella, Bukrylithus, Diloma, Heteromarginatus, Misceomarginatus, Monomarginatus, Vacherauvillius, Braloweria, Clepsilithus, Crepidolithus, Loxolithus, Neocrepidolithus, 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)
Closed central area; unicyclic
Narrow central area filled with an axial cross; bicyclic
Narrow, vacant, central area, surrounded by thick inner cycle of elements
Large (9-13 µm) species, with complex central structure 
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.

Search data:
TagsLITHS: murolith, elliptical, CA: concentric-ring(s), cross-axial, vacant, closed, V-UNITS: V-prominent, DETAILS: ca_disjunct, rim-bicyclic, rim-unicyclic,
MetricsLith size: 4->13µm;
Sources: 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 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: 3-4-2020

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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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