CATALOG OF ORIGINAL DESCRIPTIONS: Globotruncana contusa patelliformis Gandolfi 1955

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.


Higher levels: pf_cat -> G -> Globotruncana -> Globotruncana contusa patelliformis
Other pages this level: << < G. calcarata primitiva, G. calcarata retardata, G. caliciformis sarmientoi, G. caliciformis trinidadensis, G. campbelli, G. canaliculata ventricosa, G. carpathica, G. carteri, G. churchi, G. citae, G. coldreriensis, G. concavata cyrenaica, G. conica, G. conica plicata, G. contusa galeoidis, G. contusa patelliformis, G. contusa scutilla, G. contusa witwickae, G. convexa, G. culverensis, G. dentata, G. dorreeni, G. dupeublei, G. erevanica, G. falsocalcarata, G. falsostuarti, G. fareedi, G. flexuosa, G. fornicata, G. fornicata ackermanni, G. fornicata cesarensis, > >>

Globotruncana contusa patelliformis

Citation: Globotruncana contusa patelliformis Gandolfi 1955
Rank: sub-species
Type locality: A section near Km. 92 on the Fonseca-Riohacha road, Rancheria Valley, 40 km. north of Fonseca, NE part of the State of Magdalena, northern Colombia.
Type age: Campanian-Maastrichtian
Type sample and level: Km. 92 section, S. 5579.
Holotype Repository: Ithaca, New York; Paleontological Research Institution
Type & figured specimens: PI. 4, fig. 2a-c; 20849: type description p.54

Current identification/main database link: Contusotruncana patelliformis (Gandolfi, 1955)


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)."

Size: Dimensions of holotype: Width 0.48 x 0.42 mm.; thickness, 0.35 mm.

Extra details from original publication
Remarks. —The form is evidently closely related to Glt. contusa contusa. Glt. contusa was originally described by Cushman as a "variety" of Glt. area from the Papagallos shale, but no figure was given. Later Cushman, 1946 (p. 50, pi. 62, fig. 6), presented a drawing of it, but the form differs from the present one in having a more prominent pyramidal shape.

References:

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


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Globotruncana contusa patelliformis compiled by the pforams@mikrotax project team viewed: 29-9-2020

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