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Contusotruncana plicata


Classification: pf_mesozoic -> Globotruncanidae -> Contusotruncana -> Contusotruncana plicata
Sister taxa: C. contusa, C. fornicata, C. morozovae, C. patelliformis, C. plicata, C. plummerae, C. walfischensis, C. sp.,

Taxonomy

Citation: Contusotruncana plicata (White 1928, emended by Solakius and Salaj, 1985)
Rank: Species
Basionym: Globotruncana conica var. plicata
Synonyms: Globotruncana navarroensis

Type images:

Original description: Globotruncana conica plicata White, emended by Solakius and Salaj (1928), 1985: "This form differs from Globotruncana conica in being fluted or having folds on the dorsal side, starting at or near the top and widening toward the base, causing the outline as seen from above, to appear fluted or polygonal. Diameter of type specimen, 0.8 mm.; thickness, 0.55 mm."

Entries in the Catalog of original descriptions: Globotruncana conica plicata;
Globotruncana navarroensis;

Geological Range:
Last occurrence (top): within A. mayaroensis zone (67.30-69.18Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): within R. fructicosa zone (69.18-70.14Ma, base in Maastrichtian stage). Data source: [copied from Chronos database]

Plot of occurrence data:

NB Plotting of Neptune data has been disabled on the Mesozoic pages because the dataset is both small and badly affected by a few sites with erroneous age models (our obs Huber, Petrizzo, Young, Nov 2016). The data can still be viewed via the range plottertool - tools menu.

Character matrix

test outline:Subcircularchamber arrangement:Trochospiraledge view:Spiroconvexaperture:Umbilical
umb chamber shape:Crescenticcoiling axis:Highperiphery:Double keelaperture border:Thick porticus
sp chbr shape:Crescenticumbilicus:Wideperiph margin shape:Subangularaccessory apertures:Intralaminal
umbilical or test sutures:Moderately depressedumb depth:Deepwall texture:Finely pustuloseshell porosity:
spiral sutures:Moderately depresseddiameter mm:0.80 mmwidth mm:breadth mm:0.55 mm
final-whorl chambers:4.0-5.0

References:

Solakius, N. & Salaj, J., (1985). Foraminiferids from the Maastrichtian of Enfidaville, northeastern Tunisia. Neues Jahrbuch für Geologie und Palaeontologie Abhandlungen, 170(2): 229-241.

White, M.P., (1928). Some Index Foraminifera of the Tampico Embayment Area of Mexico. Journal of Paleontology, 2(3): 177-215.


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Contusotruncana plicata compiled by the pforams@mikrotax project team viewed: 23-11-2017

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