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Muricohedbergella almadenensis


Classification: pf_mesozoic -> Hedbergellidae -> Muricohedbergella -> Muricohedbergella almadenensis
Sister taxa: M. almadenensis, M. angolae, M. astrepta, M. atlantica, M. blakensis, M. crassa, M. delrioensis, M. flandrini, M. hoelzli, M. holmdelensis, M. implicata, M. kyphoma, M. loetterli, M. monmouthensis, M. planispira, M. portsdownensis, M. praelibyca, M. rosebudensis, M. sliteri, M. wondersi, M. sp.,

Taxonomy

Citation: Muricohedbergella almadenensis (Cushman and Todd, 1948)
Rank: Species
Basionym: Globigerina almadenensis
Taxonomic discussion: The stratigraphic range of this taxon is largely unknown. The strata from which the material was collected was considered Lower Cretaceous in age by Cushman and Todd (1948). No subsequent studies were carried to clarify the age of this taxon. [copied from Chronos database]

Type images:

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

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 occurrence data:

Dec 2017 - Plotting of Neptune data has been re-enabled on the Mesozoic pages following revision of the age-models in Neptune. The data is, however, still very sparse for the Early Cretaceous

Character matrix

test outline:Subcircularchamber arrangement:Trochospiraledge view:aperture:Umbilical-extraumbilical
sp chamber shape:Subrectangularcoiling axis:Lowperiphery:aperture border:Thin lip
umb chbr shape:Trapezoidalumbilicus:Wideperiph margin shape:Broadly roundedaccessory apertures:Relict
spiral sutures:Moderately depressedumb depth:Deepwall texture:Finely pustuloseshell porosity:
umbilical or test sutures:Moderately depressedfinal-whorl chambers:7.0-8.0 N.B. These characters are used for advanced search. N/A - not applicable

References:

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 V O


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Muricohedbergella almadenensis compiled by the pforams@mikrotax project team viewed: 28-9-2020

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Short stable page link: http://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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