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Muricohedbergella loetterli


Classification: pf_mesozoic -> Hedbergellidae -> Muricohedbergella -> Muricohedbergella loetterli
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 loetterli (Nauss, 1947)
Rank: Species
Basionym: Globigerina loetterli
Synonyms: Hedbergella murphyi

Type images:

Original description: Test rotaliform, dorsal side convex, ventral side umbilicate; periphery rounded; chambers subglobular, closely appressed and penultimate chambers sometimes smaller than anatepenultimate; sutures distinct, depressed, slightly curved; wall calcareous, finely perforate; aperture opening into umbilicus, almost invariably obscured by foreign material.

Entries in the Catalog of original descriptions: Globigerina loetterli, Hedbergella murphyi

Geological Range:
Last occurrence (top): within M. schneegansi zone (89.91-92.56Ma, top in Turonian stage). Data source: [copied from Chronos database]
First occurrence (base): within M. schneegansi zone (89.91-92.56Ma, base in Turonian 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:Lobatechamber arrangement:Trochospiraledge view:Spiroconvexaperture:Umbilical
sp chamber shape:Inflatedcoiling axis:Lowperiphery:N/Aaperture border:N/A
umb chbr shape:Inflatedumbilicus:Wideperiph margin shape:Broadly roundedaccessory apertures:None
spiral sutures:Moderately depressedumb depth:Shallowwall texture:Finely pustuloseshell porosity:Finely Perforate: 1-2.5┬Ám
umbilical or test sutures:Strongly depressedfinal-whorl chambers:6.0-8.0 N.B. These characters are used for advanced search. N/A - not applicable

References:

Nauss, A. W. (1947). Cretaceous Microfossils of the Vermillion Area, Alberta. Journal of Paleontology. 21(4): 329-343. gs


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Muricohedbergella loetterli 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=110370 Go to Archive.is to create a permanent copy of this page - citation notes



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