CATALOG OF ORIGINAL DESCRIPTIONS: Globotruncana caliciformis trinidadensis 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 caliciformis trinidadensis
Other pages this level: << < G. arca esnehensis, G. arcaformis, G. aspera, G. asymetrica, G. atlantica, G. aturica, G. azerbaidjanica, G. bahijae, G. bollii, G. bulloides naussi, G. calcarata, G. calcarata arcata, 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> >>

Globotruncana caliciformis trinidadensis

Citation: Globotruncana caliciformis trinidadensis 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 (chronostrat): Campanian-Maastrichtian
Type sample (& lithostrat): Km. 92 section, S. 5606.
Type specimens: PI. 3, fig. 2a-c; 20840: type description p.47
Type repository: Ithaca, New York; Paleontological Research Institution

Current identification/main database link: Globotruncana rosetta (Carsey, 1926)


Original Description
"Fairly convex dorsally; lobate periphery; chambers of the last whorl petaloid as in G. caliciformis subsp. Sarmientoi. The chambers, however, are more elongated and flattened on the ventral side, where the sutures are radial with sutural elevations generally absent, at least in the early stages. The umbilical cavity is smaller than in G. calciformis Vogler subsp. caliciformis Vogler subsp. Caliciformis but larger than in typical G. caliciformis sarmientoi. The form is single-keeled in the adult stages, double-keeled in the early stages. The test is considerably rougher, especially on the umbilical side of the early chambers. The apertural system takes a completely intermediate position, as in general do all the morphological characteristics, between G. caliciformis caliciformis and G. caliciformis sarmientoi. The test is dextrally coiled."

Size: Dimensions of holotype. Width 0.44 x 0.37 mm.; thickness, 0.15 mm.

Extra details from original publication
Remarks. Bolli decribed such caliciformis forms with the keel disappearing in the adult stage in his Trinidad paper. In fact, this form is to be considered transitional between Glt. caliciformis caliciformis and Glt. caliciformis sarmientoi.

References:

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


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Globotruncana caliciformis trinidadensis compiled by the pforams@mikrotax project team viewed: 1-8-2021

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