Monomarginatus


Classification: Mesozoic -> Eiffellithales -> Chiastozygaceae -> Monomarginatus
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: Muroliths with narrow, unicyclic rim and wide central-area spanned by axial, concentric and lateral bars.


Daughter taxa: (blue => in age window 0-800Ma)
Monomarginatus pectinatus
Large species of Monomarginatus with 8 to 16 perforations between diamond-shaped inner frame and outer rim
Monomarginatus quaternarius
Species of Monomarginatus with four large triangular central perforations and four outer elliptical perforations
Monomarginatus sp.
Specimens not identified to species level

Taxonomy:

Citation: Monomarginatus Wind & Wise in Wise & Wind, 1977
Rank: Genus
Type species: Monomarginatus pectinatus Wind & Wise in Wise & Wind, 1977

Farinacci & Howe catalog pages: Monomarginatus *

Distinguishing features: Muroliths with narrow, unicyclic rim and wide central-area spanned by axial, concentric and lateral bars.

Search data:
TagsLITHS: murolith, elliptical, CA: concentric-ring(s), cross-axial, ca_disjunct, grill, pores, process, CROSS-POLARS: rim-unicyclic, V-prominent,
MetricsLith size: 8->12µm;
Data source notes: 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 Maastrichtian Stage (100% up, 66Ma, in Maastrichtian 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:

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

Wise, S. W. & Wind, F. H. (1977). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 36 drilling on the Falkland Plateau, south-west Atlantic sector of the Southern Ocean. Initial Reports of the Deep Sea Drilling Project. 36(269-491): -. gs V O


nannotaxlogo400px

Monomarginatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 26-10-2020

Taxon Search:
Advanced Search

Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10696 Go to Archive.is to create a permanent copy of this page - citation notes



Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics