Wisea


Classification: ntax_mesozoic -> Podorhabdales -> Cretarhabdaceae -> Wisea
Sister taxa: Mattiolia, Wisea ⟩⟨ Speetonia ⟩⟨ Cruciellipsis, Flabellites, Grantarhabdus, Helenea ⟩⟨ Cretarhabdus, Retecapsa, Pickelhaube, Miravetesina


Daughter taxa (time control age-window is: 0-800Ma)
Wisea sanjuanensis

Taxonomy:

Citation: Wisea Lees, Schueth & Howe in Schueth & Lees (2019)
Rank: Genus
Basionym: Wisea Lees, Schueth & Howe in Schueth & Lees (2019)
Type species: Wisea sanjuanensis Lees, Schueth & Howe in Schueth & Lees (2019)

Farinacci & Howe catalog pages: Wisea *


Morphology: A cretarhabdacean with a broad distal shield, which is mod- erately birefringent and apparently lacking an outer cycle. The distal shield elements of the rim are relatively broad, showing little imbrication, and are fewer in number than in other cretarhabdids. The rim is marked by four distinctive, sharp, thin black sutures, arranged in a ‘V’ shape at each end of the ellipse. An axial cross is present in the central area.

Differentiation: Wisea differs from other cretarhabdaceans in having no visible outer cycle in the distal shield, in having relatively few rim elements that do not appreciably imbricate, and in possessing distinctively sharp and narrow extinction lines that do not curve. In other cretarhabdacean genera, the extinction lines are diffuse, and curved to some degree. The axial cross also distinguishes it from most other cretarhabdaceans.

Search data:
TagsLITHS: placolith, elliptical, CA: cross-axial, ca_disjunct, closed,
MetricsLith size: 0->0┬Ám;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Coniacian Stage (86.26-89.77Ma, top in Coniacian stage). Data source:
First occurrence (base): within Turonian Stage (89.77-93.90Ma, base in Turonian stage). Data source:

Plot of occurrence data:

References:


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Wisea compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-2-2021

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=11389 Go to Archive.is to create a permanent copy of this page - citation notes



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