arrayname: original
Taxonomy
Combniation in Muricohedbergella propsed by Huber & Leckie 2011
Original description: Test.--very low trochospiral, nearly planispiral in appearance. Equatorial periphery strongly lobate. Axial periphery rounded.
Wall.--calcareous, finely perforate, covered with short minute spines.
Chambers.--inflated, globular; about 15 arranged in 2 1/2 whorls. The 5, occasionally 6, chambers of the final whorl increase rather rapidly in size; the last two make up over 1/2 of the test.
Sutures.--spiral side: oblique in early stages to straight in adult stages, depressed, Umbilical side: radial, depressed.
Umbilicus.--narrow, deep.
Aperture.--a low arch with a distinct lip; interiomarginal, extraumbilical-umbilical.
Coiling.--random.
Entries in the Catalog of original descriptions: Globorotalia monmouthensis
Character matrix
test outline: | Lobate | chamber arrangement: | Trochospiral | edge view: | aperture: | ||
sp chamber shape: | Globular | coiling axis: | Very low | periphery: | N/A | aperture border: | Thin lip |
umb chbr shape: | Globular | umbilicus: | Narrow | periph margin shape: | Broadly rounded | accessory apertures: | Relict |
spiral sutures: | Strongly depressed | umb depth: | Deep | wall texture: | Finely pustulose | shell porosity: | Finely Perforate: 1-2.5µm |
umbilical or test sutures: | Strongly depressed | final-whorl chambers: | 5-6 | N.B. These characters are used for advanced search. N/A - not applicable |
Geological Range:
Last occurrence (top): within P0 zone (66.00-66.04Ma, top in Danian stage). Data source: [copied from Chronos database]
First occurrence (base): within G. gansseri zone (71.73-73.80Ma, base in Campanian stage). Data source: [copied from Chronos database]
Plot of range and occurrence data:
Huber, B. T. & Leckie, R. M. (2011). Planktic foraminiferal species turnover across deep-sea Aptian/Albian boundary sections. Journal of Foraminiferal Research. 41: 53-95. gs Olsson, R. K. (1960). Foraminifera of late Cretaceous and earliest Tertiary age in the New Jersey Coastal Plain. Journal of Paleontology. 34(1): 1-58. gs Olsson, R. K., Hemleben, C., Berggren, W. A. & Huber, B. T. (1999). Atlas of Paleocene Planktonic Foraminifera. Smithsonian Institution Press, Washington, DC. (85): 1-252. gs Pessagno, E. A. (1967). Upper Cretaceous planktonic foraminifera from the western Gulf Coastal Plain. Palaeontographica Americana. 5: 245-445. gs O Smith, C. C. & Pessagno, E. A. (1973). Planktonic foraminifera and stratigraphy of the Corsicana formation (Maestrichtian) North-central Texas. Cushman Foundation for Foraminiferal Research, Special Publication. 12: 1-67. gs OReferences:
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Muricohedbergella monmouthensis compiled by the pforams@mikrotax project team viewed: 22-4-2025
Short stable page link: https://mikrotax.org/pforams/index.php?id=110371 Go to Archive.is to create a permanent copy of this page - citation notes |
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