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Hedbergella hexacamerata


Classification: pf_mesozoic -> Hedbergellidae -> Hedbergella -> Hedbergella hexacamerata
Sister taxa: H. aptiana, 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, > >>

Taxonomy

Citation: Hedbergella hexacamerata (Boudagher-Fadel, Banner, Whittaker, 1997)
Rank: Species
Basionym: Blefuscuiana hexacamerata

Type images:

Original description: Test comprising two to three whorls coiled in a low trochospire, partially evolute and concave on spiral side with six chambers in the last whorl, inflated, subglobular (h/L=1 approx.). The first chambers in the last whorl, when seen on the spiral side, are slightly longer than high, but as high as long in the last three chambers. The dorsal side is flat to concave. The umbilicus is small (u/uh=0.3 approx.) and deep and the aperture is a narrow slit. Perforation cones have not been found on this species.

Entries in the Catalog of original descriptions: Blefuscuiana hexacamerata

Geological Range:
Last occurrence (top): within Aptian Stage (112.95-126.30Ma, top in Aptian stage). Data source:
First occurrence (base): within H. infracretacea zone (118.02-118.93Ma, base in Aptian 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

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Hedbergella

    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:5.5-6.5 N.B. These characters are used for advanced search. N/A - not applicable

    References:

    BouDagher-Fadel, M. K., Banner, F. T. & Whittaker, J. E. (1997). The Early Evolutionary History of Planktonic Foraminifera. Chapman and Hall, London. -. gs


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    Hedbergella hexacamerata compiled by the pforams@mikrotax project team viewed: 15-12-2019

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    Short stable page link: http://mikrotax.org/pforams/index.php?id=110244 Go to Archive.is to create a permanent copy of this page - citation notes



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