pforams@mikrotax - Marginotruncana caronae pforams@mikrotax - Marginotruncana caronae

Marginotruncana caronae


Classification: pf_mesozoic -> Globotruncanidae -> Marginotruncana -> Marginotruncana caronae
Sister taxa: M. angusticarenata, M. caronae, M. coronata, M. desioi, M. manaurensis, M. marginata, M. paraconcavata, M. pileoliformis, M. pseudolinneiana, M. renzi, M. schneegansi, M. sigali, M. sigmoconcavata, M. sinuosa, M. tarfayaensis, M. undulata, M. sp.

Taxonomy

Citation: Marginotruncana caronae Peryt 1980
Taxonomic rank: species
Basionym: Marginotruncana caronae

Type images:

Original description: Test low trochospiral, planoconvex, nearly flat on spiral side, convex on umbilical side, lobulate; chambers arranged in 2.5 to 3 whorls; chambers petaloid, slightly inflated on spiral side, subrectangular, convex most strongly around umbilicus, on umbilical side; final whorl consisting of 4.5 to 5 chambers increasing regularly in size as added, truncated by raised, beaded double keel; wall covered by pustulae except one or two terminal chambers that are smooth; sutures raised, curved; umbilicus broad, ordered by mildly elevated umbilical shoulder; primary aperture extraumbilical-umbilical; portici broken in material examined.

Entries in the Catalog of original descriptions: Marginotruncana caronae

Character matrix
test outline:Lobatechamber arrangement:Trochospiraledge view:Planoconvexaperture:
sp chamber shape:Petaloidcoiling axis:periphery:Double keelaperture border:
umb chbr shape:umbilicus:Wideperiph margin shape:Narrowly roundedaccessory apertures:
spiral sutures:Raised beadedumb depth:Shallowwall texture:shell porosity:Finely Perforate: 1-2.5µm
umbilical or test sutures:Raised beadedfinal-whorl chambers:4.5-5 N.B. These characters are used for advanced search. N/A - not applicable

Geological Range:
Last occurrence (top): within D. asymetrica zone (83.65-85.60Ma, top in Santonian stage). Data source: [copied from Chronos database]
First occurrence (base): within M. schneegansi zone (89.75-92.51Ma, base in Turonian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:

References:

Falzoni, F., Petrizzo, M. R., Jenkyns, H. C., Gale, A. S. & Tsikos, H. (2016). 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. Cretaceous Research. 59: 69-97. gs

Huber, B. T., Petrizzo, M. R., Watkins, D. K., Haynes, S. J. & MacLeod, K. G. (2017a). Huber, B. T., Petrizzo, M. R., Watkins, D. K., Haynes, S. J. & MacLeod, K. G. (2017). Correlation of Turonian continental margin and deep-sea sequences in the subtropical Indian Ocean sediments by integrated planktonic foraminiferal and calcareous nannofossil biostratigraphy. Newsletters on Stratigraphy. 50: 141-185. Newsletters on Stratigraphy. 50: 141-185. gs

Peryt, D. (1980). Peryt, D. (1980). Planktic foraminifera zonation of the Upper Cretaceous in the middle Vistula River valley, Poland. Palaeontologia Polonica. 41: 1-123. Palaeontologia Polonica. 41: 1-123. gs


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Marginotruncana caronae compiled by the pforams@mikrotax project team viewed: 12-5-2025

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Short stable page link: https://mikrotax.org/pforams/index.php?id=110330 Go to Archive.is to create a permanent copy of this page - citation notes



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