pforams@mikrotax - Globotruncanella petaloidea pforams@mikrotax - Globotruncanella petaloidea

Globotruncanella petaloidea


Classification: pf_mesozoic -> Globotruncanidae -> Globotruncanella -> Globotruncanella petaloidea
Sister taxa: G. compressiformis, G. havanensis, G. minuta, G. petaloidea, G. pschadae, G. semsalensis, G. sp.

Taxonomy

Citation: Globotruncanella petaloidea (Gandolfi, 1955)
taxonomic rank: Species
Basionym: Globotruncana (Rugoglobigerina) petaloidea
Synonyms: Globotruncanella kefennsoura; Rugoglobigerina jerseyensis; Globotruncana (Rugoglobigerina) petaloidea subpetaloidea

Type images:

Original description: "Pronounced petaloid periphery as in G. citae and G. petaloidea subpetaloidea; chamber subglobular, sutural elevations completely disappearing or marked sometimes by more frequent tubercles, especially along the margin of the early chambers. Ther terminal face is as usual mor or less triangular with a faint edge toward the umbilical face. The test is dextrally coiled. A fine umbilical lip appears to fringe the last chamber and extends somewhat toward the periphery."

Entries in the Catalog of original descriptions: Globotruncana (Rugoglobigerina) petaloidea, Globotruncanella kefennsoura, Rugoglobigerina jerseyensis, Globotruncana (Rugoglobigerina) petaloidea subpetaloidea

Character matrix
test outline:Lobatechamber arrangement:Trochospiraledge view:Spiroconvexaperture:Umbilical-extraumbilical
sp chamber shape:Petaloidcoiling axis:Lowperiphery:Imperforate bandaperture border:Thin porticus
umb chbr shape:Petaloidumbilicus:Narrowperiph margin shape:Subangularaccessory apertures:None
spiral sutures:Moderately depressedumb depth:Deepwall texture:Finely pustuloseshell porosity:Finely Perforate: 1-2.5µm
umbilical or test sutures:Moderately depressedfinal-whorl chambers:4-4.5 N.B. These characters are used for advanced search. N/A - not applicable

Geological Range:
Last occurrence (top): within A. mayaroensis zone (67.64-69.27Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): within G. gansseri zone (71.73-73.80Ma, base in Campanian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:

References:

Almogi-Labin, A., Reiss, Z & Caron, M. (1986). Senonian globotruncanidae from Israel. Eclogae Geologicae Helvetiae. 79(3): 849-895. gs O

Gandolfi, R. (1955). The genus Globotruncana in northeastern Colombia. Bulletins of American Paleontology. 36: 1-118. gs

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


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Globotruncanella petaloidea compiled by the pforams@mikrotax project team viewed: 19-6-2024

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