Taxonomy
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
Character matrix
test outline: | Ovate | chamber arrangement: | Trochospiral | edge view: | Planoconvex | aperture: | Umbilical |
sp chamber shape: | Inflated | coiling axis: | Very low | periphery: | N/A | aperture border: | Thin lip |
umb chbr shape: | Inflated | umbilicus: | Narrow | periph margin shape: | Broadly rounded | accessory apertures: | None |
spiral sutures: | Strongly depressed | umb depth: | Shallow | wall texture: | Moderately muricate | shell porosity: | |
umbilical or test sutures: | Strongly depressed | final-whorl chambers: | 5.5-6.0 | N.B. These characters are used for advanced search. N/A - not applicable |
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. gsReferences:
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Whiteinella aprica compiled by the pforams@mikrotax project team viewed: 8-12-2019
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