pforams@mikrotax - Planoglobulina multicamerata

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Planoglobulina multicamerata

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

Smith and Pessagno 1973_14f5-6-192.JPG
ODP Site 1052-192.JPG
Pessagno 1967 pl89 15.JPG

Taxonomy

Citation: Planoglobulina multicamerata (De Klasz, 1953)

Rank: Species

Basionym: Ventilabrella multicamerata

Synonyms: Ventilabrella alpina; Planoglobulina meyerhoffi

Type images:

holotype: V. multicamerata

Original description:

Translated using Google translate from German. Original text below

Diagnosis: A species with the characteristics of the genus Ventilabrella with the following peculiarities: The number of chambers is much larger than in the other species of the genus. The two-line part is relatively small. The adult part is very flat compressed.

Description: The test is subtriangular, sometimes wider than high. After a small, only in diaphanous light clearly visible hiserialen beginning part widened it quickly. The adult stage consists of a large number of fan-shaped in a plane arranged chambers. At ¼ height of the case, where this shows its greatest thickness, these chambers are somewhat bloated. The adult chambers are separated by weakly serrated seams, some of which are unclear. The shape of the chambers is irregular. Ornamentation is almost always absent in typical individuals; at most, one occasionally notices a slight longitudinal striation, especially at the more inflated chambers of the thicker chamber portion.

Diagnose : Eine Art mit den Merkmalen der Gattung Ventilabrella mit folgenden Besonderheiten: Die Zahl der Kammern ist viel größer als bei den anderen Arten der Gattung. Der zweizeilige Teil ist verhältnismäßig klein. Der Erwachsenen-Teil ist sehr stark flach zusammengedrückt.

Beschreibung : Das Gehäuse ist subtriangular, bei manchen Eiemplaren breiter als hoch. Nach einem kleinen, nur in durchfallendem Licht deutlich sichtbaren hiserialen Anfangsteil verbreitert es sich rasch. Das Erwachsenenstadium besteht aus einer großen Anzahl fächerförmig in einer Ebene angeordneter Kammern. In ¼ Höhe des Gehäuses, dort, wo dieses seine größte Dicke zeigt, sind diese Kammern etwas aufgebläht. Die adulten Kammern sind durch schwach eingeriefte Nähte getrennt, die teilweise undeutlich verlaufen. Die Gestalt der Kammern ist unregelmäßig. Eine Ornamentierung fehlt bei typischen Individuen fast immer; höchstens bemerkt man gelegentlich eine schwache Längsstreifung, besonders an den stärker aufgeblähten Kammern des dickeren Kammeranteils.

Entries in the Catalog of original descriptions: Ventilabrella multicamerata, Ventilabrella alpina, Planoglobulina meyerhoffi

Geological Range:
Last occurrence (top): within P. hariaensis zone (66.39-67.30Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): within G. havanensis zone (74.00-75.71Ma, 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
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Taxon plotted: Planoglobulina multicamerata, synonyms included - Gublerina multicamerata; Planoglobulina meyerhoffi; Planoglobulina multicamerata; Pseudotextularia multicamerata; Ventilabrella alpina; Ventilabrella multicamerata;
See also space-time plot :: Samples map :: 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:	Narrowly rounded	accessory apertures:	N/A
spiral sutures:	Moderately depressed	umb depth:	N/A	wall texture:	Vermiculate	shell porosity:	Finely Perforate: 1-2.5µm
umbilical or test sutures:	Moderately depressed	final-whorl chambers:	6.0-10.0	N.B. These characters are used for advanced search. N/A - not applicable

References:

de Klasz, I. (1953a). Einige neue oder wenig bekannte Foraminiferen aus der helvetischen Oberkreide der bayerischen Alpen, südlich Traunstein (Oberbayern). Geologica Bavarica. 17: 223-244. gs V O

Pessagno, E. A. (1967). Upper Cretaceous planktonic foraminifera from the western Gulf Coastal Plain. Palaeontographica Americana. 5: 245-445. gs V 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 V O

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

Taxon Search:

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Short stable page link: https://mikrotax.org/pforams/index.php?id=110396 Go to Archive.is to create a permanent copy of this page - citation notes

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