Taxonomy
Original description: Test medium sized; coiled in a low trochospire, formed by about three whorls; peripheral margin stellate; five to six chambers in the last whorl increasing gradually in size as added; first chambers spherical, last two or three chambers elongate, acute and somewhat compressed; spherical to elongate in peripheral view; sutures straight, depressed on both spiral and umbilical sides; primary aperture extraumbilical-spiroumbilical bordered by an imperforate porticus; umbilicus wide and shallow relict flaps often observed umbilically.
Entries in the Catalog of original descriptions: Hedbergella kuhryi
Emended description:
Character matrix
test outline: | Stellate | chamber arrangement: | Trochospiral | edge view: | Compressed | aperture: | |
sp chamber shape: | Elongate | coiling axis: | Very low | periphery: | N/A | aperture border: | Thin lip |
umb chbr shape: | Elongate | umbilicus: | Wide | periph margin shape: | Subangular | accessory apertures: | N/A |
spiral sutures: | Strongly depressed | umb depth: | Shallow | wall texture: | Smooth | shell porosity: | Finely Perforate: 1-2.5µm |
umbilical or test sutures: | Strongly depressed | final-whorl chambers: | 5.5-6 | N.B. These characters are used for advanced search. N/A - not applicable |
Geological Range:
Last occurrence (top): within G. algerianus zone (116.86-118.24Ma, top in Aptian stage). Data source: [copied from Chronos database]
First occurrence (base): within G. blowi zone (120.55-124.40Ma, base in Barremian stage). Data source: [copied from Chronos database]
Plot of range and occurrence data:
Longoria, J. F. (1974). Stratigraphic, morphologic and taxonomic studies of Aptian planktonic foraminifera. Revista Española de Micropaleontología. Numero Extraordinario: 5-107. gsReferences:
Hedbergella kuhryi compiled by the pforams@mikrotax project team viewed: 13-10-2024
Short stable page link: https://mikrotax.org/pforams/index.php?id=110247 Go to Archive.is to create a permanent copy of this page - citation notes |
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