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.
| Daughter taxa: (blue => in age window 0-800Ma) | ||||
| = Bucherina sandidgei | |||
Current identification/main database link: Bucherina Brönnimann and Brown 1956
Original Description
The calcareous hyaline test is initially coiled in a low trocho¬ spiral, later becoming a high trochospiral with an accompanying shift in the axis of coiling. The early chambers are globular, inflated, and globigerine-like. Later chambers are axially (vertically) elongated, but they are dorsally flattened and exhibit a keeled, imperforate, peripheral band. The early chambers are smooth to irregularly hispid. Later chambers exhibit pustules and traces of costellae. The aperture is rounded, interiomarginal, and opens into a relatively small but deep umbilicus. Short apertural flaps extend into the umbilicus but do not form a cover-plate.
Etymology: This genus is named for Walter H. Bücher.
Extra details from original publication
Remarks: Bucherina, n. gen., resembles Globotruncana and Rugotruncana, n. gen., but it differs from both in lacking an umbilical cover-plate and in exhibiting a shift in the axis of coiling. It is also similar to its forerunner, Kuglerina, n. gen., but the latter has no imperforate, peripheral band.
Bucherina, n. gen., is monotypic; however, Globigerina mckannai White from the Velasco [ Tamesi] shale of México may possibly belong to this genus.
Age: Maastrichtian.
Brönnimann, P. & Brown, N. K. (1956). Taxonomy of the Globotruncanidae. Eclogae Geologicae Helvetiae. 48: 503-562. gsReferences:
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Bucherina compiled by the pforams@mikrotax project team viewed: 19-2-2020
Short stable page link: http://mikrotax.org/pforams/index.php?id=130124 Go to Archive.is to create a permanent copy of this page - citation notes |