pforams@mikrotax - Clavihedbergella amabilis pforams@mikrotax - Clavihedbergella amabilis

Clavihedbergella amabilis


Classification: pf_mesozoic -> Hedbergellidae -> Clavihedbergella -> Clavihedbergella amabilis
Sister taxa: C. amabilis, C. eocretacea, C. leckiei, C. moremani, C. moulladei, C. pauliani, C. simplex, C. simplicissima, C. subcretacea, C. subdigitata, C. sp.

Taxonomy

Citation: Clavihedbergella amabilis (Loeblich&Tappan, 1961)
taxonomic rank: Species
Basionym: Hedbergella amabilis
Synonyms:

Type images:

Original description: Test free, of medium size, in a nearly flat trochospiral coil of 2-2.5 whorls; 5 or more rarely 6 subglobular chambers in the final whorl, increasing rapidly in size as added, umbilicus broad and open; sutures deeply constricted, distinct; wall calcareous, distinctly but very finely spinose; aperture a low interiomarginal, extraumbilical arch, the broad spatulate lip commonly with a somewhat irregular margin.

Entries in the Catalog of original descriptions: Hedbergella amabilis, Globigerinella escheri clavata

Character matrix
test outline:Lobatechamber arrangement:Trochospiraledge view:-aperture:Umbilical-extraumbilical
sp chamber shape:Inflatedcoiling axis:Lowperiphery:N/Aaperture border:Thin lip
umb chbr shape:Inflatedumbilicus:Narrowperiph margin shape:Broadly roundedaccessory apertures:Relict
spiral sutures:Strongly depressedumb depth:Shallowwall texture:Smoothshell porosity:-
umbilical or test sutures:Strongly depressedfinal-whorl chambers:4.5-5.5 N.B. These characters are used for advanced search. N/A - not applicable

Geological Range:
Last occurrence (top): within W. archaeocretacea zone (93.52-94.03Ma, top in Turonian stage). Data source: [copied from Chronos database]
First occurrence (base): within T. globotruncanoides zone (98.85-100.50Ma, base in Cenomanian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:

References:

Huber, B. T., Petrizzo, M. R., Watkins, D. K., Haynes, S. J. & MacLeod, K. G. (2017a). Correlation of Turonian continental margin and deep-sea sequences in the subtropical Indian Ocean sediments by integrated planktonic foraminiferal and calcareous nannofossil biostratigraphy. Newsletters on Stratigraphy. 50: 141-185. gs

Loeblich, A. R. & Tappan, H. (1961). Cretaceous planktonic foraminifera: Part I-Cenomanian. Micropaleontology. 7: 257-304. gs

Pessagno, E. A. (1967). Upper Cretaceous planktonic foraminifera from the western Gulf Coastal Plain. Palaeontographica Americana. 5: 245-445. gs O


logo

Clavihedbergella amabilis compiled by the pforams@mikrotax project team viewed: 23-5-2024

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/pforams/index.php?id=110041 Go to Archive.is to create a permanent copy of this page - citation notes



Add Comment

* Required information
Captcha Image
Powered by Commentics

Comments

No comments yet. Be the first!