Taxonomy
Original description: Test trochoid, compressed, composed of 2 to 2½ whorls, spire low, umbilicus large, open; chambers distinct, seven in the adult whorl, very little increasing in size as added in the adult; sutures distinct, depressed, radial; wall rough, probably due to the original spinosity of the surface; aperture opening into the umbilicus.
Entries in the Catalog of original descriptions: Globigerina almadenensis
Character matrix
| test outline: | Subcircular | chamber arrangement: | Trochospiral | edge view: | aperture: | Umbilical-extraumbilical | |
| sp chamber shape: | Subrectangular | coiling axis: | Low | periphery: | aperture border: | Thin lip | |
| umb chbr shape: | Trapezoidal | umbilicus: | Wide | periph margin shape: | Broadly rounded | accessory apertures: | Relict |
| spiral sutures: | Moderately depressed | umb depth: | Deep | wall texture: | Finely pustulose | shell porosity: | |
| umbilical or test sutures: | Moderately depressed | final-whorl chambers: | 7-8 | N.B. These characters are used for advanced search. N/A - not applicable | |||
Geological Range:
Last occurrence (top): within P. subticinensis zone (103.94-106.98Ma, top in Albian stage). Data source: [copied from Chronos database]
First occurrence (base): within T. primula zone (107.39-111.84Ma, base in Albian stage). Data source: [copied from Chronos database]
Plot of range and occurrence data:
Cushman, J. A. & Todd, R. (1948). A foraminiferal fauna from the New Almaden district, California. Contributions from the Cushman Laboratory for Foraminiferal Research. 24: 90-98. gs References:

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Muricohedbergella almadenensis compiled by the pforams@mikrotax project team viewed: 18-11-2025
Short stable page link: https://mikrotax.org/pforams/index.php?id=110358 Go to Archive.is to create a permanent copy of this page - citation notes |
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