pforams@mikrotax - Rectoguembelina cretacea

Rectoguembelina cretacea

Classification: pf_mesozoic -> Heterohelicidae -> Rectoguembelina -> Rectoguembelina cretacea
Sister taxa: R. cretacea, R. sp.


Citation: Rectoguembelina cretacea Cushman 1932
Rank: Species
Basionym: Rectoguembelina cretacea

Type images:

Original description: Test consisting of two unequal portions, the early portion consisting of several pairs of globular chambers arranged as in Guembelina, the adult stage uniserial, formed usually by three subglobular or slightly pyriform chambers, slightly overlapping, the apertural end extended out into a tapering neck; sutures distinct, depressed; wall smooth, translucent, very finely perforate; aperture circular, at the end of the tubular neck.

Entries in the Catalog of original descriptions: Rectoguembelina cretacea

Geological Range:
Last occurrence (top): within P2 zone (62.29-62.60Ma, top in Danian stage). Data source: [copied from Chronos database]
First occurrence (base): within A. mayaroensis zone (67.30-69.18Ma, base in Maastrichtian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:

Character matrix
test outline:Elongatechamber arrangement:Biserialedge view:Equally biconvexaperture:Terminal
sp chamber shape:Inflatedcoiling axis:N/Aperiphery:N/Aaperture border:N/A
umb chbr shape:Inflatedumbilicus:N/Aperiph margin shape:Broadly roundedaccessory apertures:N/A
spiral sutures:Moderately depressedumb depth:N/Awall texture:Smoothshell porosity:
umbilical or test sutures:Moderately depressedfinal-whorl chambers:1.0-2.0 N.B. These characters are used for advanced search. N/A - not applicable


Cushman, J. A. (1932). Rectoguembelina, a new genus from the Cretaceous. Contributions from the Cushman Laboratory for Foraminiferal Research. 8(1): 4-7. gs V O


Rectoguembelina cretacea compiled by the pforams@mikrotax project team viewed: 9-12-2021

Taxon Search:
Advanced Search

Short stable page link: Go to to create a permanent copy of this page - citation notes

Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
Captcha Image
Powered by Commentics