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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:

    Eicher, D. L. & Worstell, P. (1970). Lunatriella, a Cretaceous heterohelicid foraminifer from the western interior of the United States. Micropaleontology. 16(1): 117-121. gs

    Huber, B. T., Petrizzo, M. R., Watkins, D. K., Haynes, S. J. & MacLeod, K. G. (2017a). Correlation of Turonian continental margin and deep-sea sequences in the subtropical Indian Ocean sediments by integrated planktonic foraminiferal and calcareous nannofossil biostratigraphy. Newsletters on Stratigraphy. 50: 141-185. gs

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

    Robaszynski, F., Caron, M. & le Groupe de Travail Européen des Foraminifères Planctoniques (1979). Atlas des Foraminiféres Planctoniques du Crétace Moyen (Mer Boréale et Téthys). Cahiers de Micropaléontologie,. 1 & 2: 1-185. gs

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    Whiteinella aprica compiled by the pforams@mikrotax project team viewed: 8-12-2019

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