Distinguishing features:
Parent taxon (Haqius): Unicyclic, elliptical and circular placolith coccoliths with a narrow or closed central area and a characteristically dark gray (low birefringence) XPL image.
This taxon: Small to medium (3-7 µm) elliptical Haquis species
Taxonomy:
Farinacci & Howe catalog pages: H. peltatus *
Distinguishing features:
Parent taxon (Haqius): Unicyclic, elliptical and circular placolith coccoliths with a narrow or closed central area and a characteristically dark gray (low birefringence) XPL image.
This taxon: Small to medium (3-7 µm) elliptical Haquis species
Morphology:
Differentiated from Haqius ellipticus by size and from H. circumradiatus by outline (elliptical).
LITHS: placolith, elliptical, CROSS-POLARS: rim-unicyclic, V-prominent, |
Lith size: 3->7µm; Data source notes: original description & illustrated specimens |
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 (137.70-143.10Ma, base in Berriasian stage). Data source: Bown 2005
Plot of occurrence data:
Haqius peltatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 19-9-2024
Short stable page link: https://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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