CATALOG OF ORIGINAL DESCRIPTIONS: Bucherina sandidgei Bronnimann & Brown 1956

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 -> B -> Bucherina -> Bucherina sandidgei
Other pages this level: B. sandidgei,

Bucherina sandidgei

Citation: Bucherina sandidgei Bronnimann & Brown 1956
Rank: Species
Type locality: NW corner of Paseo Carlos III and Calzada de Belascoain (Padre Varela), Habana, Cuba (Brown Sta. 30011)
Type age: Upper Maastrichtian
Holotype Repository: Washington; USNM
Type & figured specimens: 628615

Linked specimens: USNM-628615

Current identification/main database link: Bucherina sandidgei Bronnimann & Brown 1956


Original Description
Test low trochospiral, planoconvex in edge view, often presenting a shift in the axis of coiling in the adult stage. Outline subcircular to lobate, 5½ to 6 slowly increasing in size chambers in the final whorl. Sutures slightly curved depressed between the last formed chambers of the final whorl, slightly raised and lined with a row of pustules between the earlier chambers of the final whorl. Umbilical sutures depresed. Periphery truncated presenting a faint keel mostly developed on the earlier chambers of the final whorl. Chambers flattened dorsally and inflated on the umbilical side. Umbilical diameter approximately ¼ to â…“ of the maximum test diameter. Main aperture interiomarginal, umbilical bordered bu a delicate tegilla, successive tegilla leaving both distal and proximal accessory apertures. Test surface presents scattered pustules and papillae lacking meridional arrangement.

Etymology: This species is named for J. R. Sandidge for his work on Cretaceous Foraminifera.

Extra details from original publication
Remarks: Bucherina sandidgei, n. sp., most closely resembles Globigerina mckannai White. White's specimens, which were examined at Columbia University, do not have sharp-shouldered whorls and are not as strongly granulose. The coiling of Kuglerina rotundata (Brönnimann) is similar to that of B. sandidgei, n. sp., but the former has no imperforate, peripheral band.
Rather small, poorly developed specimens of B. sandidgei, n. sp., have been observed in the Corsicana marl (lower Maastrichtian) and Kemp clay (middle Maastrichtian) of the Navarro group in Texas. It seems to be best developed in high Maastrichtian beds.

Range: Maastrichtian.

References:

Brönnimann, P. & Brown, N. K. (1956). Taxonomy of the Globotruncanidae. Eclogae Geologicae Helvetiae. 48: 503-562. gs


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Bucherina sandidgei compiled by the pforams@mikrotax project team viewed: 5-4-2020

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