pforams@mikrotax - Planohedbergella yaucoensis pforams@mikrotax - Planohedbergella yaucoensis

Planohedbergella yaucoensis


Classification: pf_mesozoic -> Globigerinelloididae -> Planohedbergella -> Planohedbergella yaucoensis
Sister taxa: P. aspera, P. circularis, P. escheri, P. impensa, P. messinae, P. multispina, P. prairiehillensis, P. subcarinata, P. ultramicra, P. yaucoensis

Taxonomy

Citation: Planohedbergella yaucoensis (Pessagno, 1960)
taxonomic rank: species
Basionym: Planomalina yaucoensis Pessagno, 1960
Synonyms:

Type images:

Original description: "Test lobulate, biumbilicate, planispirally coiled with 6-8 chambers in last whorl; initial chambers spherical, later chambers ovoid, gradually increasing in size; ornamentation consisting of medium-sized papillae; sutures straight, radial, and depressed; umbilici large and deep; aperture equatorial, a low semicircular opening leading into both umbilical areas from base of last chamber; last chamber frequently compressed or variously distorted."

Entries in the Catalog of original descriptions: Planomalina yaucoensis, Planomalina ehrenbergi

Character matrix
test outline:Lobatechamber arrangement:Planispiraledge view:Hourglassaperture:Equatorial
sp chamber shape:Inflatedcoiling axis:N/Aperiphery:N/Aaperture border:Thin lip
umb chbr shape:Inflatedumbilicus:Narrowperiph margin shape:Broadly roundedaccessory apertures:Relict
spiral sutures:Strongly depressedumb depth:Shallowwall texture:Finely pustuloseshell porosity:-
umbilical or test sutures:Strongly depressedfinal-whorl chambers:7-8 N.B. These characters are used for advanced search. N/A - not applicable

Most likely ancestor: Planohedbergella prairiehillensis - at confidence level 3 (out of 5). Data source: Huber et al. 2022 fig. 2.
Likely descendants: Planohedbergella circularis; plot with descendants

Geological Range:
Last occurrence (top): within A. mayaroensis zone (67.64-69.27Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): within D. asymetrica zone (83.65-85.60Ma, base in Santonian stage). Data source: Huber et al. 2022

Plot of range and occurrence data:

References:

Huber, B. T., Petrizzo, M. M. & Falzoni, F. (2022b). Taxonomy and phylogeny of Albian–Maastrichtian planispiral planktonic foraminifera traditionally assigned to Globigerinelloides. Micropaleontology. 68(2): 117-183. gs

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


logo

Planohedbergella yaucoensis compiled by the pforams@mikrotax project team viewed: 27-5-2024

Taxon Search:
Advanced Search

Short stable page link: https://mikrotax.org/pforams/index.php?id=110150 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!