Micrantholithus angulosus


Classification: ntax_cenozoic -> Braarudosphaerales -> Braarudosphaeraceae -> Micrantholithus -> Micrantholithus angulosus
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.

Taxonomy:

Citation: Micrantholithus angulosus Stradner & Papp 1961
Rank: Species
Basionym: Micrantholithus flos angulosus Stradner 1959

Distinguishing features: Arms end in a trilobate termination. most specimens thin with narrow arms.

Farinacci & Howe catalog pages: M. angulosus [no catalog entry yet]

Search data:
TagsLITHS: nannolith-radiate, pentagonal, star-shaped, CROSS-POLARS: T-prominent,
MetricsLith size: 9->13µm; Segments: 5->5; Liths per sphere: 12->12
Data source notes: lith size (diameter) from OD & illustrated specimens; 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 Late Eocene Sub-Epoch (33.89-37.75Ma, top in Priabonian stage). Data source: Bybell & Gartner 1972
First occurrence (base): within Middle Eocene Sub-Epoch (37.75-47.84Ma, base in Lutetian stage). Data source: Bybell & Gartner 1972

Plot of occurrence data:

References:

Bybell, L. M. & Gartner, S. (1972). Provincialism among mid-Eocene calcareous nannofossils. Micropaleontology. 18(319-336): -. gs

Bybell, L. (1975). Middle Eocene calcareous nannofossils at Little Stave Creek, Alabama. Tulane Studies in Geology and Paleontology. 11(4): 177-247. gs V O

Stradner, H. & Papp, A. (1961). Tertiäre Discoasteriden aus Österreich und deren stratigraphische Bedeutung mit Hinweisen auf Mexico, Rumanien und Italien. Jahrbuch der Geologischen Bundesanstalt, Sonderband. 7: 1-159. gs V O

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Micrantholithus angulosus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 23-4-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=856 Go to Archive.is to create a permanent copy of this page - citation notes
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