Taxonomy
Original description: Test moderately trochoid; chambers in the early portion globular, the penultimate chamber becoming slightly elongate and the final chamber strongly elongate and evenly rounded at the end; chambers about 4 in the final whorl; sutures distinct, moderately depressed; wall finely spinose; aperture indistinct.
Entries in the Catalog of original descriptions: Hastigerinella simplex
Character matrix
| test outline: | Lobate | chamber arrangement: | Trochospiral | edge view: | Hourglass | aperture: | Umbilical-extraumbilical |
| sp chamber shape: | Elongate | coiling axis: | Very low | periphery: | N/A | aperture border: | Thin lip |
| umb chbr shape: | Elongate | umbilicus: | Narrow | periph margin shape: | Moderately rounded | accessory apertures: | Relict |
| spiral sutures: | Strongly depressed | umb depth: | Shallow | wall texture: | Finely pustulose | shell porosity: | - |
| umbilical or test sutures: | Strongly depressed | final-whorl chambers: | 4-4.5 | N.B. These characters are used for advanced search. N/A - not applicable | |||
Geological Range:
Last occurrence (top): within D. concavata zone (85.60-89.75Ma, top in Santonian stage). Data source: [copied from Chronos database]
First occurrence (base): within M. renilaevis zone (112.96-113.20Ma, base in Albian stage). Data source:
Plot of range and occurrence data:
Eicher, D. L. & Worstell, P. (1970). Lunatriella, a Cretaceous heterohelicid foraminifer from the western interior of the United States. Micropaleontology. 16(1): 117-121. gs Morrow, A. L. (1934). Foraminifera and ostracoda from the Upper Cretaceous of Kansas. Journal of Paleontology. 8: 186-205. gs Pessagno, E. A. (1967). Upper Cretaceous planktonic foraminifera from the western Gulf Coastal Plain. Palaeontographica Americana. 5: 245-445. gs O Petrizzo, M. R. & Huber, B. T. (2006). Biostratigraphy and taxonomy of late Albian planktonic foraminifera from ODP Leg 171B (western North Atlantic Ocean). Journal of Foraminiferal Research. 36: 166-190. gs References:

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Clavihedbergella simplex compiled by the pforams@mikrotax project team viewed: 7-10-2026
Short stable page link: https://mikrotax.org/pforams/index.php?id=110047 Go to Archive.is to create a permanent copy of this page - citation notes |
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