Lithraphidites alatus


Classification: Mesozoic -> Nannoliths inc sedis -> Microrhabdulaceae -> Lithraphidites -> Lithraphidites alatus
Sister taxa: L. carniolensis, L. charactozorro, L. grossopectinatus, L. kennethii, L. praequadratus, L. quadratus, L. acutus, L. alatus, L. pseudoquadratus, L. bollii, L. houghtonii, L. moray-firthensis, L. sp.,

Distinguishing features:

Lithraphidites with blades that taper gradually from their broadest point near one end. The overall shape is like a closed umbrella. 


Daughter taxa: (blue => in age window 0-800Ma)
Smaller form.
Large Lithraphidites (~20µm long) with broad blades (~>5.7µm wide) that taper from their broadest point near one end.

Taxonomy:

Citation: Lithraphidites alatus subsp. alatus Thierstein in Roth & Thierstein, 1972
Rank: Species
Variants:

Large form (~20µm long) has been differentiated as Lithraphidites alatus subsp. magnus (Thierstein in Roth & Thierstein, 1972) Covington & Wise, 1987.

Farinacci & Howe catalog pages: Lithraphidites alatus * , Lithraphidites alatus magnus * ,

Distinguishing features:

Lithraphidites with blades that taper gradually from their broadest point near one end. The overall shape is like a closed umbrella. 

Geological Range:
Last occurrence (top): within Cenomanian Stage (93.90-100.50Ma, top in Cenomanian stage). Data source: Burnett 1998
First occurrence (base): within Albian Stage (100.50-112.95Ma, base in Albian stage). Data source: Burnett 1998

Plot of occurrence data:

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Lithraphidites alatus, synonyms included - Lithraphidites alatus; space-time plot :: Samples map :: Parent: Lithraphidites

    References:

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

    Covington, J. M. & Wise, S. W. (1987). Calcareous nannofossil biostratigraphy of a Lower Cretaceous deep-sea fan complex: Deep Sea Drilling Project Leg 93 Site 603, lower continental rise off Cape Hatteras. Initial Reports of the Deep Sea Drilling Project. 93: 617-660. gs

    Roth, P. H. & Thierstein, H. R. (1972). Calcareous nannoplankton: Leg 14 of the Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 12: 546-559. gs


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    Lithraphidites alatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-7-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10579 Go to Archive.is to create a permanent copy of this page - citation notes



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