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Planoglobulina manuelensis


Classification: pf_mesozoic -> Heterohelicidae -> Planoglobulina -> Planoglobulina manuelensis
Sister taxa: P. acervulinoides, P. brazoensis, P. browni, P. carseyae, P. manuelensis, P. multicamerata, P. riograndensis, P. sp.

Taxonomy

Citation: Planoglobulina manuelensis (Martin, 1972)
Rank: Species
Basionym: Ventilabrella manuelensis

Type images:

Original description: Test flabelliform to subcircular, compressed. Six chambers in diminished biserial portion, after which test abruptly flares out, having 35 chambers in multiserial portion. Early chambers in multiserial portion globular, with heavy vermicular ornamentation; later chambers globular to subglobular; fine, closely spaced, longitudinal costae on final series of chambers; 2 chambers in later portion of test sometimes merging to form single, crescent shaped chamber. Sutures depressed, slightly obscured by vermicular ornamentation. Arched, basal aperture on front and back of all but outermost chambers in final row.

Entries in the Catalog of original descriptions: Ventilabrella manuelensis

Geological Range:
Last occurrence (top): within G. gansseri zone (71.75-72.97Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): within G. aegyptiaca zone (72.97-74.00Ma, base in Campanian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:

Character matrix

test outline:Palmatechamber arrangement:Multiserialedge view:Compressedaperture:Multiple
sp chamber shape:Inflatedcoiling axis:N/Aperiphery:N/Aaperture border:Thin flange
umb chbr shape:Inflatedumbilicus:N/Aperiph margin shape:Broadly roundedaccessory apertures:N/A
spiral sutures:Moderately depressedumb depth:N/Awall texture:Finely costateshell porosity:
umbilical or test sutures:Moderately depressedfinal-whorl chambers:6.0-12.0 N.B. These characters are used for advanced search. N/A - not applicable

References:

Martin, S. E. (1972). Reexamination of the Upper Cretaceous planktonic foraminifera genera Planoglobulina and Ventilabrella Cushman. Journal of Foraminiferal Research. 2(2): 73-92. gs


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Planoglobulina manuelensis compiled by the pforams@mikrotax project team viewed: 21-4-2021

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Short stable page link: https://mikrotax.org/pforams/index.php?id=110395 Go to Archive.is to create a permanent copy of this page - citation notes



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