arrayname: original
Taxonomy
Original description: Test small to medium, planispiral, evolute to semi-involute and laterally inflated; 2 to 2.5 whorls; 5 to 5.5 chambers in the outer whorl increasing rapidly and gradually in size as added; first chambers spherical to subspherical, the last two or three radially elongate; equatorial periphery ovoid and strongly lobate; sutures straight to slightly curved, radial and depressed; umbilical area rather small and shallow; aperture straddling the periphery as a low to medium arc possibly bordered by a thin lip; relict openings at time observed. Wall smooth finely perforate.
Entries in the Catalog of original descriptions: Globigerinelloides paragottisi clavatus
Character matrix
test outline: | Lobate | chamber arrangement: | Planispiral | edge view: | Hourglass | aperture: | Equatorial |
sp chamber shape: | Elongate | coiling axis: | Very low | periphery: | N/A | aperture border: | Thin lip |
umb chbr shape: | Elongate | umbilicus: | Wide | periph margin shape: | Broadly rounded | accessory apertures: | Relict |
spiral sutures: | Strongly depressed | umb depth: | Shallow | wall texture: | Smooth | shell porosity: | |
umbilical or test sutures: | Strongly depressed | final-whorl chambers: | 5-5.5 | N.B. These characters are used for advanced search. N/A - not applicable |
Geological Range:
Last occurrence (top): within P. rohri zone (113.22-116.60Ma, top in Aptian stage). Data source: [copied from Chronos database]
First occurrence (base): within G. algerianus zone (116.86-118.24Ma, base in Aptian stage). Data source: [copied from Chronos database]
Plot of range and occurrence data:
Verga, D. & Premoli Silva, I. (2005). Early Cretaceous planktonic Foraminifera from the Tethys; the upper Aptian, planispiral morphotypes with elongate chambers. Cretaceous Research. 26(2): 239-259. gsReferences:
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Globigerinelloides clavatus compiled by the pforams@mikrotax project team viewed: 25-4-2025
Short stable page link: https://mikrotax.org/pforams/index.php?id=110128 Go to Archive.is to create a permanent copy of this page - citation notes |
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