pforams@mikrotax - Contusotruncana patelliformis pforams@mikrotax - Contusotruncana patelliformis

Contusotruncana patelliformis

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


Citation: Contusotruncana patelliformis (Gandolfi, 1955)
taxonomic rank: Species
Basionym: Globotruncana contusa patelliformis
Synonyms: Globotruncana contusa witwickae

Type images:

Original description: "Form more convex on the dorsal side than Globotruncana contusa subsp. Scutilla Gandolfi, 1955, the convexity being more pronounced in the last stages; last chambers higher, petaloid and often undulated; sutural elevations thinner and frequently split on the dorsal side into the lines of beads. The form is double-keeled, becoming often single-keeled in the more adult stages. The umbilical cavity is large, the umbilical lips are thin and slightly more arched than in Globotruncana contusa scutilla and Globo truncana contusa subsp. Contusa (Cushman)."

Entries in the Catalog of original descriptions: Globotruncana contusa patelliformis, Globotruncana contusa witwickae

Character matrix
test outline:Subpolygonalchamber arrangement:Trochospiraledge view:Spiroconvexaperture:Umbilical
sp chamber shape:Crescenticcoiling axis:Highperiphery:Double keelaperture border:Thick porticus
umb chbr shape:Crescenticumbilicus:Wideperiph margin shape:Subangularaccessory apertures:Intralaminal
spiral sutures:Moderately depressedumb depth:Deepwall texture:Finely pustuloseshell porosity:
umbilical or test sutures:Moderately depressedfinal-whorl chambers:4-5 N.B. These characters are used for advanced search. N/A - not applicable

Geological Range:
Last occurrence (top): within A. mayaroensis zone (67.64-69.27Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): within G. ventricosa zone (76.18-79.20Ma, base in Campanian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:


Almogi-Labin, A., Reiss, Z & Caron, M. (1986). Senonian globotruncanidae from Israel. Eclogae Geologicae Helvetiae. 79(3): 849-895. gs O

Gandolfi, R. (1955). The genus Globotruncana in northeastern Colombia. Bulletins of American Paleontology. 36: 1-118. gs

Robaszynski, F., Caron, M., Gonzales Donoso, J. M., Wonders, A. A. H. & the European Working Group on Planktonic Foraminifera (1984). Atlas of Late Cretaceous globotruncanids. Revue de Micropaléontologie. 26(3-4): 145-305. gs

Smith, C. C. & Pessagno, E. A. (1973). Planktonic foraminifera and stratigraphy of the Corsicana formation (Maestrichtian) North-central Texas. Cushman Foundation for Foraminiferal Research, Special Publication. 12: 1-67. gs O


Contusotruncana patelliformis compiled by the pforams@mikrotax project team viewed: 1-3-2024

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