Heteromarginatus


Classification: Mesozoic -> Eiffellithales -> Chiastozygaceae -> Heteromarginatus
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: Bicyclic muroliths with axial cross and additional small bars in the central-area.


Daughter taxa: (blue => in age window 0-800Ma)


Specimens not identified to species level

Taxonomy:

Citation: Heteromarginatus Bukry, 1969
Rank: Genus
Type species: Heteromarginatus wallacei Bukry, 1969

Farinacci & Howe catalog pages: Heteromarginatus *

Distinguishing features: Bicyclic muroliths with axial cross and additional small bars in the central-area.

Search data:
TagsLITHS: murolith, elliptical, CA: concentric-ring(s), cross-axial, grill, DETAILS: ca_disjunct, rim-bicyclic,
MetricsLith size: 4->10┬Ám;
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 top of Campanian Stage (100% up, 72.1Ma, in Campanian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Campanian Stage (0% up, 83.6Ma, in Campanian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bukry, D. (1969). Upper Cretaceous coccoliths from Texas and Europe. University of Kansas Paleontological Contributions, Articles. 51 (Protista 2): 1-79. 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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Heteromarginatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 10-8-2020

Taxon Search:
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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10520 Go to Archive.is to create a permanent copy of this page - citation notes



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