Dicarinella elata

Classification: pf_mesozoic -> hidden -> deleted -> Dicarinella elata
Sister taxa: A. pessagnoi, C. lunaris, C. navarroensis, D. cyrenaica, Dicarinella elata, G. burlingtonensis, G. caseyi, G. cepedai, G. volutus, G. austinensis, G. caliciformis, G. lobata, G. loeblichi, Globotruncana obliqua, G. skewesae, G. stephensoni, G. trinidadensis, G. wilsoni, G. citae, > >>


Citation: Dicarinella elata Lamolda 1977
Basionym: Dicarinella elata

Type images:

Original description: Dicarinella elata Lamolda 1977: Test trochospiral; ventral side strongly convex; spiral side flat to slightly convex. Sixteen to eighteen chambers arranged in 2.5 to 3 whorls; six to seven chambers in outer whorl. Equatorial periphery lobulate; axial periphery sharp. Single beaded keel with double row of pustules, at least in early chambers of outer whorl as in Marginotruncana sigali (Reichel) [Globotruncana (Globotruncana) sigali, 1950]; double keel in preceding whorl. Sutures on spiral side raised, beaded and curved, outlining semicircular chambers; sutures on ventral side radial and depressed, lying between subtriangular inflated chambers. Primary aperture interiomarginal, extraumbilical-umbilical in position. Umbilicus large, its diameter 1/3 of diameter of test or more, covered by portici in well-preserved specimens. Test smooth, except that early chambers of outer whorl are rugose umbilically. Wall perforate, except for keel and raised sutures, which are imperforate.

Entries in the Catalog of original descriptions: Dicarinella elata;

Geological Range:
Last occurrence (top): within D. concavata zone (86.71-89.91Ma, top in Coniacian stage). Data source: [copied from Chronos database]
First occurrence (base): within H. helvetica zone (92.56-93.52Ma, base in Turonian 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:Lobatechamber arrangement:Trochospiraledge view:aperture:Umb.-extraumbilical
umb chamber shape:Trapezoidalcoiling axis:Lowperiphery:Single keelaperture border:Thin porticus
sp chbr shape:Subtriangularumbilicus:Narrowperiph margin shape:Subangularaccessory apertures:Infralaminal
umbilical or test sutures:Moderately depressedumb depth:Deepwall texture:Finely pustuloseshell porosity:
spiral sutures:Raised beadeddiameter mm:0.68width mm:breadth mm:0.22
final-whorl chambers:6.0-7.0


Lamolda, M., (1977). Three new species of planktonic foraminifera from the Turonian of northern Spain. Micropaleontology, 23: 470-477.


Dicarinella elata compiled by the pforams@mikrotax project team viewed: 22-2-2018

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