CATALOG OF ORIGINAL DESCRIPTIONS: Globotruncana arca caribica 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 arca caribica
Other pages this level: G. adamsi, G. aegyptiaca, G. aegyptiaca duwi, G. alpina, G. andori, G. ansarii, G. appenninica, G. arabica, G. araratica, G. arca caribica, G. arca esnehensis, G. arcaformis, G. aspera, G. asymetrica, G. atlantica, G. aturica, G. bahijae, G. bollii, G. bulloides naussi, G. calcarata, G. calcarata arcata, G. calcarata primitiva, G. calcarata retardata, G. caliciformis sarmientoi, G. caliciformis trinidadensis, > >>

Globotruncana arca caribica

Citation: Globotruncana arca caribica 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. 5592.
Holotype Repository: Ithaca, New York; Paleontological Research Institution
Type & figured specimens: PI. 5, fig. 5a-c ; 20854: type description p.64

Current identification/main database link: Contusotruncana fornicata (Plummer, 1931)


Original Description
Similar to Glt. arca but has fewer chambers (4-5) in the last whorl, increasing more rapidly in size with more finely beaded sutures. The test is dextrally coiling.

Size: Dimensions of holotype: Width 0.38 x 0.36 mm.; thickness, 0.25 mm.

Extra details from original publication
Remarks.—The form is rare, but it appears more frequently higher in the section, probably representing a more evolved test and an evolutionary tendency toward forms with fewer chambers in the last whorl (cf. Glt. fornicata cesarensis, Glt. tricarinata colombiana, and Glt. ventricosa). Morphologically it may be related to Glt. fornicata fornicata (evolved forms) because of the somewhat elongate chambers. The regular test without undulating chambers, the more convex and sharply angled sideview, the more protruding umbilical slide are distinctive characteristics.

References:

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


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Globotruncana arca caribica compiled by the pforams@mikrotax project team viewed: 28-9-2020

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Comments (1)

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Le Coze

Pb of priority + G. mariei Banner & Blow, 1960 is a primary junior homonym of G. mariai (emend. mariei) Gandolfi, 1955

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Jeremy Young (UK)

I will ask Brian Huber to look at that (but he is away now for a copule of months). Jeremy

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Brian Huber

This taxon is now considered a junior synonym of fornicata.

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