Haqius peltatus


Classification: Mesozoic -> Heterococcoliths inc sedis -> placoliths inc sedis -> Haqius -> Haqius peltatus
Sister taxa: H. circumradiatus, H. ellipticus, H. peltatus, H. sp.,

Distinguishing features: Small (<6.5 µm), elliptical, unicyclic placoliths with a narrow or closed central area. Under LM XPL the shields appear gray and individual elements are usually visible. Some specimens possess small bar-like structures that cross the narrow central area.


Taxonomy:

Citation: Haqius peltatus Bown, 2005
Rank: Species

Farinacci & Howe catalog pages: Haqius peltatus *

Distinguishing features: Small (<6.5 µm), elliptical, unicyclic placoliths with a narrow or closed central area. Under LM XPL the shields appear gray and individual elements are usually visible. Some specimens possess small bar-like structures that cross the narrow central area.


Morphology remarks: Differentiated from Haqius ellipticus by size (<6.5 µm) and from H. circumradiatus by outline (elliptical).

Geological Range:
Last occurrence (top): within NC8a subzone (112.65-112.95Ma, top in Albian stage). Data source: Bown 2005
First occurrence (base): within Berriasian Stage (139.39-145.01Ma, base in Berriasian stage). Data source: Bown 2005

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: Haqius peltatus, synonyms included - Haqius peltatus;
  • space-time plot :: Samples map :: Parent: Haqius

    References:

    Bown, P. R. (2005c). Early to Mid-Cretaceous Calcareous Nannoplankton from the Northwest Pacific Ocean, Leg 198, Shatsky Rise. Proceedings of the Ocean Drilling Program. Scientific Results. 198: 1-82. gs


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    Haqius peltatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 18-11-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10493 Go to Archive.is to create a permanent copy of this page - citation notes



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