pforams@mikrotax - Planoglobulina carseyae

Planoglobulina carseyae

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

Martin 1972 pl4 f4.JPG
Martin 1972 pl4 f5.JPG
Martin 1972 pl4 f6.JPG
Martin 1972 pl4 f7.JPG
Pessagno 1967 pl87 10.JPG
Pessagno 1967 pl87 15.JPG
Pessagno 1967 pl87 16.JPG
Smith and Pessagno 1973_5F8-10-190.JPG
Smith and Pessagno 1973_5F11-12-190.JPG
DSDP Site 511-190.JPG
ODP Site 1049-190.JPG
Nederbragt 1991_7f2-190.JPG
Smith and Pessagno 1973_5f5-7-190.JPG

Taxonomy

Citation: Planoglobulina carseyae (Plummer, 1931)

Rank: Species

Basionym: Ventilabrella carseyae

Taxonomic discussion: Planoglobulina carseyae is one of the two species of this genus in which the earlier biserial stage is of Heterohelix type. Refigured holotype below is relevant. [copied from Chronos database]

Type images:

holotype: V. carseyae
holotype: V. carseyae
topotype: V. carseyae
topotype: V. carseyae
x: V. carseyae

Original description: Test V-shaped, laterally somewhat compressed, composed throughout much of its development of appressed, well-in flated, distinctly striate biserial chambers that increase rapidly in size with growth, later chambers arranged ir regularly in the plane of biseriality forming a fully mature test that is somewhat fan-shaped in peripheral outline; sutures deeply incised; aperture a broad lunate opening at base of septal face of biserial portion of test and a similar opening on each side of many of the later chambers.

Entries in the Catalog of original descriptions: Ventilabrella carseyae

Emended description:

Biserial chambers deeper than wide followed by one or two sets of multiserial chamberlets. Test V-shaped, laterally somewhat compressed, composed throughout much of its development of appressed, well-inflated, distinctly striate biserial chambers that increase rapidly in size with growth, later chambers arranged irregularly in the plane of biseriality forming a fully mature test that is somewhat fan-shaped in peripheral outline; sutures deeply incised; aperture a broad lunate opening at base of septal face of biserial portion of test and a similar opening on each side of many of the later chambers. [copied from Chronos database]

Morphology:

Wall type:

Size:

Character matrix
test outline: Subtriangular chamber arrangement: Multiserial edge view: Compressed aperture: Biapertural
sp chamber shape: Inflated coiling axis: N/A periphery: N/A aperture border: Thin lip
umb chbr shape: Inflated umbilicus: N/A periph margin shape: N/A accessory apertures: None
spiral sutures: Strongly depressed umb depth: N/A wall texture: Finely costate shell porosity: Microperforate: <1µm
umbilical or test sutures: Strongly depressed final-whorl chambers: 2.0-3.0 N.B. These characters are used for advanced search. N/A - not applicable

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 carseyae, synonyms included - Planoglobulina carseyae; Pseudoguembelina carseyae;
See also space-time plot :: Samples map :: Parent: Planoglobulina

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

Nederbragt, A. J. (1991). Late Cretaceous biostratigraphy and development of Heterohelicidae (planktic foraminifera). Micropaleontology. 37: 329-372. gs

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

Plummer, H. J. (1931b). Some Cretaceous foraminifera in Texas. University of Texas Bulletin. 3101: 109-203. gs

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 carseyae compiled by the pforams@mikrotax project team viewed: 28-9-2022

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Short stable page link: https://mikrotax.org/pforams/index.php?id=110394 Go to Archive.is to create a permanent copy of this page - citation notes

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test outline:	Subtriangular	chamber arrangement:	Multiserial	edge view:	Compressed	aperture:	Biapertural
sp chamber shape:	Inflated	coiling axis:	N/A	periphery:	N/A	aperture border:	Thin lip
umb chbr shape:	Inflated	umbilicus:	N/A	periph margin shape:	N/A	accessory apertures:	None
spiral sutures:	Strongly depressed	umb depth:	N/A	wall texture:	Finely costate	shell porosity:	Microperforate: <1µm
umbilical or test sutures:	Strongly depressed	final-whorl chambers:	2.0-3.0	N.B. These characters are used for advanced search. N/A - not applicable