Catalog - Hastigerinella bermudezi

CATALOG OF ORIGINAL DESCRIPTIONS: Hastigerinella bermudezi Bolli 1957

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 -> H -> Hastigerinella -> Hastigerinella bermudezi
Other pages this level: H. alexanderi, H. bermudezi, H. bizonae, H. caucasica, H. colombiana, H. eocanica, H. eocanica aragonensis, H. frailensis, H. jarvisi, H. moremani, H. rhumbleri, H. riedeli, H. simplex, H. simplicissima, H. subcretacea, H. watersi

Hastigerinella bermudezi

Citation: Hastigerinella bermudezi Bolli 1957
Rank: Species
Type specimens: P5628 pl. 25, fig. 1a-c, holotype,: ; no.P5628.
Type sample (& lithostrat): in a cream to white marl with yellow limonitic patches. Within the Cipero formation restricted to that zone.
Type age (chronostrat): Holotype from the Miocene, Cipero formation, Globorotalia fohsi barisanensis zone;
Type locality: type locality of the Globorotalia fohsi barisanensis zone, Trinidad, sample Bo 202 (TTOC 193125). Holotype from Hermitage Quarry, on the west side of the road leading from Hermitage Village to Ally's Creek, about 1200 feet northwest of the road junction in the village, in southern Trinidad (coordinates N:208100 links; E:351800 links), T. W. I.
Type repository: USNM

Linked specimens: USNM-5628

Current identification/main database link: Clavatorella bermudezi (Bolli, 1957)


Original Description

Shape of test very low trochospiral ; equatorial periphery very strongly lobate. Wall calcareous, perforate, surface finely pitted. Chambers: early ones spherical to ovate, the ultimate ones becoming club-shaped; 12-15, arranged in about 2½ whorls; the 4-5 chambers of the last whorl increase rapidly in size. Sutures on spiral side slightly curved to radial, depressed; on umbilical side radial, depressed. Umbilicus fairly wide, shallow. Aperture a low arch or slit; interiomarginal, umbilical-extraumbilical; a faint lip is visible in well preserved specimens. Coiling trends slightly to dextral in specimens counted from the type locality.

Size:
Largest diameter of holotype 0.7 mm.

Etymology:
The species is named for Dr. Pedro J. Bermudez in recognition of his contributions to the micropaleontology of the Caribbean region.

Extra details from original publication
SynonymHastigerinella eocanica Nuttall, Cushman and Stainforth, Cushman Lab. Foram. Res., Spec. Publ. 14, p. 69, pi. 13, figs, lla-b, 1945. Bermudez, Cushman Lab. Foram. Res., Spec. Publ. 25, p. 282, pi. 22, figs. 1-2, 1949.

Remarks
: Hastigerinella bermudezi, new species, differs from H. digitata Rhumbler (=H. rhumbleri Galloway) in its lower trochospiral form and less elongate chambers. The Hastigerinella species of similar aspect described from the Eocene (H. eocena Nuttall, H. colombiana Fetters) are not fully preserved specimens and the position of the aperture of the ultimate chamber is not clearly visible. It appears likely that these Eocene forms belong to Clavigerinella which possesses an interiomarginal, symmetrical aperture. No typical species of it are known from the Cretaceous; those described from the Cretaceous belong largely to Hastigerinoides or Praeglobotruncana (see Bolli, Loeblich, and Tappan, 1957). It seems probable that true Hastigerinella does not appear before the Miocene.

Stratigraphic range (in Cipero formation): Globorotalia fohsi barisanensis zone.


Editors' Notes

References:

Blow, W. H. (1969). Late middle Eocene to Recent planktonic foraminiferal biostratigraphy. In, Bronnimann, P. & Renz, H. H. (eds) Proceedings of the First International Conference on Planktonic Microfossils, Geneva, 1967. E J Brill, Leiden 380-381. gs

Bolli, H. M. (1957b). Planktonic foraminifera from the Oligocene-Miocene Cipero and Lengua formations of Trinidad, B.W.I. In, Loeblich, A. R. , Jr., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli & E. Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin. 215: 97-123. gs V O


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Hastigerinella bermudezi compiled by the pforams@mikrotax project team viewed: 4-10-2022

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