pforams@mikrotax - Planoglobulina manuelensis

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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.

ODP Site 1050-191~b.JPG
ODP Site 1050-191~a.JPG
ODP Site 1050-191~c.JPG
Romania-191.JPG

Taxonomy

Citation: Planoglobulina manuelensis (Martin, 1972)

Rank: Species

Basionym: Ventilabrella manuelensis

Type images:

holotype: V. manuelensis
holotype: V. manuelensis
paratype: V. manuelensis
paratype: V. manuelensis
paratype: V. manuelensis

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:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
(NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Planoglobulina

Character matrix

test outline:	Palmate	chamber arrangement:	Multiserial	edge view:	Compressed	aperture:	Multiple
sp chamber shape:	Inflated	coiling axis:	N/A	periphery:	N/A	aperture border:	Thin flange
umb chbr shape:	Inflated	umbilicus:	N/A	periph margin shape:	Broadly rounded	accessory apertures:	N/A
spiral sutures:	Moderately depressed	umb depth:	N/A	wall texture:	Finely costate	shell porosity:
umbilical or test sutures:	Moderately depressed	final-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

Planoglobulina manuelensis compiled by the pforams@mikrotax project team viewed: 5-3-2021

Taxon Search:

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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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