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)
Rank: Species
Basionym: Globotruncana contusa patelliformis
Synonyms: Globotruncana contusa witwickae

Type images:

Original description: Globotruncana contusa patelliformis Gandolfi 1955: "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;

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 G. ventricosa zone (76.18-79.20Ma, base in Campanian 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:Subpolygonalchamber 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:0.43width mm:breadth mm:0.29
final-whorl chambers:4.0-5.0


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


Contusotruncana patelliformis compiled by the pforams@mikrotax project team viewed: 24-2-2018

Taxon Search:
Advanced Search

Go to Archive.is to create a permanent copy of this page - citation notes

Comments (0)

No comments yet. Be the first!

Add Comment

* Required information
Captcha Image
Powered by Commentics