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Whiteinella aprica


Classification: pf_mesozoic -> Hedbergellidae -> Whiteinella -> Whiteinella aprica
Sister taxa: W. aprica, W. archaeocretacea, W. aumalensis, W. baltica, W. bornholmensis, W. brittonensis, W. inornata, W. paradubia, W. sp.,

Taxonomy

Citation: Whiteinella aprica (Loeblich and Tappan, 1961)
Rank: Species
Basionym: Ticinella aprica

Type images:

Original description: "Test free, low trochospiral coil of two and one-half whorls, broadly umbilicate, periphery rounded, peripheral outline lobulate, five to six globular chambers in the final whorl, rarely seven, chambers increasing gradually in size as added; sutures distinct, strongly constricted, radial, straight; wall calcareous, finely perforate, surface coarsely hispid, but spines less prominent on final chambers; primary aperture an interiomarginal, umbilical-extraumbilical arch, oriented somewhat toward the plane of coiling, a narrow bordering rim flaring at the backward margin into a prominent lip, behind which is a secondary opening into the chamber, just anterior to the adjacent structure. Greatest diameter of holotype 0.63 mm. in maximum diameter.

Entries in the Catalog of original descriptions: Ticinella aprica

Geological Range:
Last occurrence (top): within M. schneegansi zone (89.91-92.56Ma, top in Turonian stage). Data source: [copied from Chronos database]
First occurrence (base): within R. cushmani zone (94.03-95.94Ma, base in Cenomanian stage). Data source: [copied from Chronos database]

Plot of occurrence data:

Dec 2017 - Plotting of Neptune data has been re-enabled on the Mesozoic pages following revision of the age-models in Neptune. The data is, however, still very sparse for the Early Cretaceous

  • 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: Whiteinella aprica, synonyms included - Whiteinella aprica; space-time plot :: Samples map :: Parent: Whiteinella

    Character matrix

    test outline:Ovatechamber arrangement:Trochospiraledge view:Planoconvexaperture:Umbilical
    sp chamber shape:Inflatedcoiling axis:Very lowperiphery:N/Aaperture border:Thin lip
    umb chbr shape:Inflatedumbilicus:Narrowperiph margin shape:Broadly roundedaccessory apertures:None
    spiral sutures:Strongly depressedumb depth:Shallowwall texture:Moderately muricateshell porosity:
    umbilical or test sutures:Strongly depressedfinal-whorl chambers:5.5-6.0 N.B. These characters are used for advanced search. N/A - not applicable

    References:

    Loeblich, A. R. & Tappan, H. (1961). Cretaceous planktonic foraminifera: Part I-Cenomanian. Micropaleontology. 7: 257-304. gs

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    Whiteinella aprica compiled by the pforams@mikrotax project team viewed: 18-8-2019

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    Short stable page link: http://mikrotax.org/pforams/index.php?id=110572 Go to Archive.is to create a permanent copy of this page - citation notes
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