Nannotax3 - ntax_cenozoic - Micrantholithus entaster

Micrantholithus entaster

Classification: ntax_cenozoic -> Braarudosphaerales -> Braarudosphaeraceae -> Micrantholithus -> Micrantholithus entaster
Sister taxa: M. breviradiatus, M. disculus, M. flos ⟩⟨ M. astrum, M. entaster, M. excelsus, M. hebecuspis, M. minimus, M. pinguis, M. vesper ⟩⟨ M. attenuatus, M. mirabilis ⟩⟨ M. angulosus, M. bramlettei, M. bulbosus, M. crenulatus, M. tinus, M. sp.

BramlSull61pl09-05.JPG
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Taxonomy:

Citation: Micrantholithus entaster Bramlette & Sullivan 1961

Rank: Species

Variants: Micrantholithus fornicatus Martini 1961 - another species with short rays described from the Danian, it lacks the central star but is otherwise similar.

Distinguishing features:
Parent taxon (Micrantholithus): Pentaliths with sutures emerging through corners; edge often indented giving stellate outline
This taxon: Medium sized Micrantholithus with deeply indented sides and elevated central star

Farinacci & Howe catalog pages: M. entaster * , M. fornicatus *

Search data:

Tags	LITHS: nannolith-radiate, pentagonal, star-shaped, CA: process, CROSS-POLARS: T-prominent,
Metrics	Lith size: 9->20µm; Segments: 5->5; Liths per sphere: 12->12 Data source notes: lith size (diameter) from OD; lith numbers assumed from geometry

The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Paleocene Epoch (55.96-66.04Ma, top in Thanetian stage). Data source: Bramlette & Sullivan 1961
First occurrence (base): within Paleocene Epoch (55.96-66.04Ma, base in Danian stage). Data source: Bramlette & Sullivan 1961

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Taxon plotted: Micrantholithus entaster, synonyms included - Micrantholithus entaster;
See also space-time plot :: Samples map :: Parent: Micrantholithus

References:

Bramlette, M. N. & Sullivan, F. R. (1961). Coccolithophorids and related nannoplankton of the Early Tertiary in California. Micropaleontology. 7(2): 129-188. gs

Micrantholithus entaster compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-9-2021

Taxon Search:

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=864 Go to Archive.is to create a permanent copy of this page - citation notes

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