Catalog - Globotruncana (Rugoglobigerina) hexacamerata subhexacamerata Catalog - Globotruncana (Rugoglobigerina) hexacamerata subhexacamerata

CATALOG OF ORIGINAL DESCRIPTIONS: Globotruncana (Rugoglobigerina) hexacamerata subhexacamerata 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 (Rugoglobigerina) -> Globotruncana (Rugoglobigerina) hexacamerata subhexacamerata
Other pages this level: G. (Rugoglobigerina) beldingi beldingi, G. (Rugoglobigerina) beldingi subbeldingi, G. (Rugoglobigerina) circumnodifer subcircumnodifer, G. (Rugoglobigerina) glaessneri glaessneri, G. (Rugoglobigerina) glaessneri subglaessneri, G. (Rugoglobigerina) hexacamerata subhexacamerata, G. (Rugoglobigerina) loetterli subloetterli, G. (Rugoglobigerina) macrocephala submacrocephala, G. (Rugoglobigerina) ornata subornata, G. (Rugoglobigerina) pennyi subpennyi, G. (Rugoglobigerina) petaloidea, G. (Rugoglobigerina) petaloidea subpetaloidea, G. (Rugoglobigerina) rotundata subrotundata

Globotruncana (Rugoglobigerina) hexacamerata subhexacamerata

Citation: Globotruncana (Rugoglobigerina) hexacamerata subhexacamerata Gandolfi 1955
Taxonomic rank: sub-species
Type specimens: PI. 1, fig. 11 ; 20831: type description p.34
Type sample (& lithostrat): Well Papayal No. 1, 210-215'.
Type age (chronostrat): Campanian-Maastrichtian
Type locality: 27 km, north of Fonseca, NE part of the State of Magdalena, northern Colombia.
Type repository: Ithaca, New York; Paleontological Research Institution

Current identification/main database link: Rugoglobigerina hexacamerata Brönnimann, 1952


Original Description

Flat to slightly convex on the dorsal side, double-keeled in the early stages, keels finely beaded often not in a continuous way, chambers (five-six in the last whorl) round, inflated, slightly overlapping especially in the early stages, truncated toward the umbilicus; sutures in the early stages curved, raised, finely beaded, becoming later radial and depressed; on the ventral side they are radial and depressed. The apertures are covered by thin plates. The lip projection of the last chamber appears sometimes as extending slightly from the umbilicus to the periphery. Test rough in the early stages, dextrally coiling.

Size:
Dimensions of holotype: Width 0.26 x 0.22 mm.; thickness, 0.13 mm

Extra details from original publication
Remarks.—As seen in Rugoglobigerina beldingi subbeldingi, the size is generally small, the Rugoglobigerina appearance evident. The wide peripheral band is maintained until the keels disappear.

References:

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


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Globotruncana (Rugoglobigerina) hexacamerata subhexacamerata compiled by the pforams@mikrotax project team viewed: 19-5-2026

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