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Schackoina multispinata


Classification: pf_mesozoic -> Schackoinidae -> Schackoina -> Schackoina multispinata
Sister taxa: S. bicornis, S. cenomana, S. multispinata, S. sp.,

Taxonomy

Citation: Schackoina multispinata (Cushman and Wickenden, 1930)
Rank: Species
Basionym: Hantkenina multispinata
Synonyms:

Type images:

Original description: Test planispiral in general, the adult chambers sometimes slightly out of alignment, earlier chambers globular but very early developing a distal tubular extension, in general in a radial position, later chambers polyhedral and with as many as five tubular processes, three chambers making up each coil; suture fairly distinct, slightly depressed; wall smooth, calcareous, thick, finely perforated; aperture a low arched opening at the base of the chamber, in the earlier stages in the median line but in the adult extending outward to the umbilical area at least on one side, with a thin lip over the opening.  

Entries in the Catalog of original descriptions: Hantkenina multispinata, Schackoina moliniensis, Hantkenina trituberculata, Schackoina cushmani

Geological Range:
Last occurrence (top): within G. ventricosa zone (76.18-79.20Ma, top in Campanian stage). Data source: [copied from Chronos database]
First occurrence (base): within T. globotruncanoides zone (96.08-100.50Ma, base in Cenomanian stage). Data source: [copied from Chronos database]

Plot of occurrence data:

Dec 2017 - Plotting of Neptune data has been re-enabled on the Mesozoic pages following revision of the age-models in Neptune. The data is, however, still very sparse for the Early Cretaceous

Character matrix

test outline:Stellatechamber arrangement:Trochospiraledge view:Equally biconvexaperture:Equatorial
sp chamber shape:Elongatecoiling axis:Lowperiphery:-aperture border:Thin lip
umb chbr shape:Elongateumbilicus:Narrowperiph margin shape:N/Aaccessory apertures:None
spiral sutures:Moderately depressedumb depth:Shallowwall texture:Smoothshell porosity:Finely Perforate: 1-2.5µm
umbilical or test sutures:Moderately depressedfinal-whorl chambers:3.0-4.0 N.B. These characters are used for advanced search. N/A - not applicable

References:

Cushman, J. A. & Wickenden, R. T. D. (1930). The development of Hantkenina in the Cretaceous with a description of a new species. Contributions from the Cushman Laboratory for Foraminiferal Research. 6(2): 39-43. gs V O

Leckie, M. (1984). Mid-Cretaceous planktonic foraminiferal biostratigraphy off Central Morocco, Deep Sea Drilling Project Leg 79, Sites 545 and 547. Initial Reports of the Deep Sea Drilling Project. 79: 579-620. 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


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Schackoina multispinata compiled by the pforams@mikrotax project team viewed: 22-9-2020

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Short stable page link: http://mikrotax.org/pforams/index.php?id=110523 Go to Archive.is to create a permanent copy of this page - citation notes



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