Catalog - Globotruncana (Rugoglobigerina) glaessneri subglaessneri Catalog - Globotruncana (Rugoglobigerina) glaessneri subglaessneri

CATALOG OF ORIGINAL DESCRIPTIONS: Globotruncana (Rugoglobigerina) glaessneri subglaessneri 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) glaessneri subglaessneri
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) glaessneri subglaessneri

Citation: Globotruncana (Rugoglobigerina) glaessneri subglaessneri Gandolfi 1955
Taxonomic rank: sub-species
Type specimens: PI. 3, fig. 9a-c ; 20844: type description p.51
Type sample (& lithostrat): Well Papayal No. 1, 210-215'.
Type age (chronostrat): Campanian-Maastrichtian
Type locality: 29 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 rugosa (Plummer, 1927)


Original Description

Four to five chambers in the last coil, high, protruding, loosely arranged, broadly pointed and polygonal; periphery fairly petaloid; a finely beaded diverging double keel is discontinuously present. On the umbilical side the sutures are radial and depressed. The last chamber has a triangular terminal face, subangular along the once present marginal elevation. A slight thickening is generally present around the umbilical cavity. The test is rather smooth, being rougher in the early stages. The umbilical cavity is smaller than in Git. intermedia intermedia. As far as the matrix filling the cavity allowed observation, a fine umbilical lip is present, at least in the last chamber, extending somewhat toward the periphery. The test is dextrally coiling.

Size:
Dimensions of holotype: Width 0.28 x 0.26 mm.; thickness, 0.18 mm

Extra details from original publication
Remarks.—The general morphological appearance of this form resembles Rotalipora beyiacensis Cita which is, however, singlekeeled and has sutural apertures. Although observation on the aperture cannot be considered as conclusive, the general appearance of the test seems to be close to Glt. intermedia intermedia such as to suggest an intermediate genetic position toward Rugoglobigerina glaessneri glaessneri.

References:

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


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

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