Trapezopentus


Classification: Mesozoic -> Braarudosphaerales -> Braarudosphaeraceae -> Trapezopentus
Sister taxa: Braarudosphaera, Bukryaster, Hexalithus, Micrantholithus, Trapezopentus,

Distinguishing features: Pentalith constructed of overlapping trapezoidal elements surrounding a large central opening.


Daughter taxa: (blue => in age window 0-800Ma)
Pentalith constructed of overlapping trapezoidal elements surrounding a large central opening.
Specimens not identified to species level

Taxonomy:

Citation: Trapezopentus Wind & Cepek, 1979
Rank: Genus
Type species: Trapezopentus sarmatus Wind & Cepek, 1979

Farinacci & Howe catalog pages: Trapezopentus *

Distinguishing features: Pentalith constructed of overlapping trapezoidal elements surrounding a large central opening.

Geological Range:
Last occurrence (top): at top of Valanginian Stage (100% up, 133.9Ma, in Valanginian stage). Data source: Total of range of species in this database
First occurrence (base): in mid part of Valanginian Stage (54% up, 136.4Ma, in Valanginian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

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

Wind, F. H. & Cepek, P. (1979). Lower Cretaceous calcareous nannoplankton from DSDP Hole 397A (northwest African Margin). Initial Reports of the Deep Sea Drilling Project. 47A: 221-235. gs


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Trapezopentus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 19-8-2019

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11246 Go to Archive.is to create a permanent copy of this page - citation notes



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