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Hedbergella modesta


Classification: pf_mesozoic -> Hedbergellidae -> Hedbergella -> Hedbergella modesta
Sister taxa: << < H. bizonae, H. bollii, H. compacta, H. excelsa, H. gorbachikae, H. handousi, H. hexacamerata, H. hispaniae, H. infracretacea, H. kuhryi, H. kuznetsovae, H. labocaensis, H. luterbacheri, H. maslakovae, H. mitra, H. modesta, H. occulta, H. praelippa, H. praetrocoidea, H. primare, H. quadricamerata, H. roblesae, H. ruka, H. semielongata, H. sigali, H. similis, H. speetonensis, H. tardita, H. tatianae, H. trocoidea, H. tunisiensis> >>

Taxonomy

Citation: Hedbergella modesta Bolli 1959
Rank: Species
Basionym: Praeglobotruncana modesta

Type images:

Original description: Shape of test small, low trochospiral, equatorial periphery lobate, axial periphery rounded. Wall calcareous, finely perforate. Chambers small, spherical, about twelve to fifteen, arranged in two to three whorls; the seven to eight chambers of the last whorl increase slowly in size. Sutures radial, depressed on spiral and umbilical side. Unbilicus fairly wide. Aperture a low arch, interiomarginal, umbilical-extraumbilical. Coiling random.

Entries in the Catalog of original descriptions: Praeglobotruncana modesta

Geological Range:
Last occurrence (top): within P. appenninica zone (100.50-101.92Ma, top in Albian stage). Data source:
First occurrence (base): within P. appenninica zone (100.50-101.92Ma, base in Albian stage). Data source:

Plot of range and occurrence data:

Character matrix

test outline:chamber arrangement:Trochospiraledge view:aperture:
sp chamber shape:coiling axis:Lowperiphery:aperture border:
umb chbr shape:umbilicus:periph margin shape:accessory apertures:
spiral sutures:umb depth:wall texture:shell porosity:
umbilical or test sutures:final-whorl chambers:7.0-8.0 N.B. These characters are used for advanced search. N/A - not applicable

References:

Bolli, H. M. (1959c). Planktonic foraminifera from the Cretaceous of Trinidad, B. W. I. Bulletins of American Paleontology. 39(179): 253-277. gs


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Hedbergella modesta compiled by the pforams@mikrotax project team viewed: 3-12-2020

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Short stable page link: http://mikrotax.org/pforams/index.php?id=110253 Go to Archive.is to create a permanent copy of this page - citation notes



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