pforams@mikrotax - Rotalipora cushmani

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Rotalipora cushmani

Classification: pf_mesozoic -> Rotaliporidae -> Rotalipora -> Rotalipora cushmani
Sister taxa: R. cushmani, R. montsalvensis, R. praemontsalvensis, R. sp.

Postuma 1971 p079-4.JPG
Robaszynski and Caron 1985_8f2-225.JPG
ODP Site 1050-225~b.JPG
Postuma 1971 p079-7.JPG
Eicher Worstell 1970_12f3-225.JPG
GC-600-cushmani-27-11 copy.jpg
ODP Site 1050-225~a.JPG
Falzoni et al 2016 f04-01.JPG
Pessagno 1967 pl101 05.JPG
Pessagno 1967 pl101 06.JPG
Pessagno 1967 pl101 07.JPG
Pessagno 1967 pl51 06.JPG
Pessagno 1967 pl51 07-9.JPG

Daughter taxa (time control age-window is: 0-800Ma)
			Rotalipora cushmani var. evoluta

Taxonomy

Citation: Rotalipora cushmani (Morrow, 1934)

Rank: Species

Basionym: Globorotalia cushmani

Synonyms: Globotruncana alpina; Globotruncana (Rotalipora) turonica expansa; Rotalipora pommerana; Rotalipora turonica

Taxonomic discussion: This species is provided with lingulae sensu Longoria and Gamper, 1975 and secondary apertures in sutural position. The main and secondary apertures are rimmed (see SEM illustrations of the topotype in Robaszynski and Caron, 1979, pl. 7, figs 1b, 1c; Eicher and Worstell, 1970, pl. 12 figs 3a, 3b and Wonders, 1980, pl. 3, fig. 3b). [copied from Chronos database]

Type images:

figured-specimen: G. cushmani
holotype: G. cushmani
paratype: G. cushmani
syntype: G. cushmani
syntype: G. cushmani
topotype: G. cushmani
topotype: G. cushmani
x: G. cushmani

Original description: Test trochoid, dorsal side moderately convex with chambers flattened or slightly inflated, dorsal sutures roundly curving, producing a scalloped periphery; the anterior margin sometimes raised slightly, ventral side strongly convex with the chambers strongly inflated, sutures deeply grooved and nearly radiate; only the last whorl, or 4-6 chambers visible, the periphery sharply rounded and thickened into a narrow rim.

Entries in the Catalog of original descriptions: Globorotalia cushmani, Globotruncana alpina, Globotruncana (Rotalipora) turonica expansa, Rotalipora pommerana, Rotalipora turonica

Geological Range:
Last occurrence (top): at top of R. cushmani zone (100% up, 94Ma, in Cenomanian stage). Data source: zonal marker (from Timescale Creator)
First occurrence (base): at base of R. cushmani zone (0% up, 95.9Ma, in Cenomanian stage). Data source: zonal marker (from Timescale Creator)

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: Rotalipora cushmani, synonyms included - Globotruncana ackermanni; Globotruncana alpina; Globotruncana turonica expansa; Rotalipora cushmani; Rotalipora expansa; Rotalipora pommerana; Rotalipora turonica;
See also space-time plot :: Samples map :: Parent: Rotalipora

Character matrix

test outline:	Lobate	chamber arrangement:	Trochospiral	edge view:	Concavo-convex	aperture:	Umbilical-extraumbilical
sp chamber shape:	Petaloid	coiling axis:	Low-moderate	periphery:	Single keel	aperture border:	Thin lip
umb chbr shape:	Subtriangular	umbilicus:	Wide	periph margin shape:	Subangular	accessory apertures:	Sutural
spiral sutures:	Raised beaded	umb depth:	Shallow	wall texture:	Finely pustulose	shell porosity:	Finely Perforate: 1-2.5µm
umbilical or test sutures:	Moderately depressed	final-whorl chambers:	5.0-8.0	N.B. These characters are used for advanced search. N/A - not applicable

References:

Eicher, D. L. & Worstell, P. (1970). Lunatriella, a Cretaceous heterohelicid foraminifer from the western interior of the United States. Micropaleontology. 16(1): 117-121. gs

Falzoni, F., Petrizzo, M. R., Jenkyns, H. C., Gale, A. S. & Tsikos, H. (2016). Planktonic foraminiferal biostratigraphy and assemblage composition across the Cenomanian–Turonian boundary interval at Clot Chevalier (Vocontian Basin, SE France). Cretaceous Research. 59: 69-97. gs

Morrow, A. L. (1934). Foraminifera and ostracoda from the Upper Cretaceous of Kansas. Journal of Paleontology. 8: 186-205. gs

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

Postuma, J. A. (1971). Manual of planktonic foraminifera. Elsevier for Shell Group, The Hague. 1-406. gs

Robaszynski, F., Caron, M. & le Groupe de Travail Européen des Foraminifères Planctoniques (1979). Atlas des Foraminiféres Planctoniques du Crétace Moyen (Mer Boréale et Téthys). Cahiers de Micropaléontologie. 1 & 2: 1-185. gs

Rotalipora cushmani compiled by the pforams@mikrotax project team viewed: 7-3-2021

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Short stable page link: https://mikrotax.org/pforams/index.php?id=110493 Go to Archive.is to create a permanent copy of this page - citation notes

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