nmn

Microhedbergella pseudotrocoidea


Classification: pf_mesozoic -> Hedbergellidae -> Microhedbergella -> Microhedbergella pseudotrocoidea
Sister taxa: M. albiana, M. intermedia, M. miniglobularis, M. praeplanispira, M. pseudodelrioensis, M. pseudoplanispira, M. pseudotrocoidea, M. renilaevis, M. rischi, M. sp.,

Taxonomy

Citation: Microhedbergella pseudotrocoidea (Michael 1973)
Rank: Species
Basionym: Hedbergella pseudotrocoidea

Type images:

Original description: Test small to medium, a low trochospiral of about 2.5 volutions; last whorl with 7-8 subglobular chambers increasing gradually in size; last chamber exceptionally large and protruding into a relatively wide umbilicus; periphery broadly rounded, lobulate; sutures radial, straight and depressed; primary aperture interiomarginal, extraumbilical-umbilical; a fragile narrow lip rarely preserved.

Entries in the Catalog of original descriptions: Hedbergella pseudotrocoidea

Geological Range:
Last occurrence (top): within P. appenninica zone (100.50-101.92Ma, top in Albian stage). Data source: [copied from Chronos database]
First occurrence (base): within P. appenninica zone (100.50-101.92Ma, base in Albian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:

Character matrix

test outline:Lobatechamber arrangement:Trochospiraledge view:-aperture:-
sp chamber shape:Globularcoiling axis:Very lowperiphery:N/Aaperture border:Thin lip
umb chbr shape:Globularumbilicus:Wideperiph margin shape:Broadly roundedaccessory apertures:Relict
spiral sutures:Moderately depressedumb depth:Deepwall texture:Smoothshell porosity:-
umbilical or test sutures:Moderately depressedfinal-whorl chambers:7.0-8.0 N.B. These characters are used for advanced search. N/A - not applicable

References:

Michael, F. Y. (1973). Planktonic foraminifera from the Comanchean Series (Cretaceous) of Texas. Journal of Foraminiferal Research. 2 (1972)(4): 200-220. gs


logo

Microhedbergella pseudotrocoidea compiled by the pforams@mikrotax project team viewed: 20-10-2020

Taxon Search:
Advanced Search

Short stable page link: http://mikrotax.org/pforams/index.php?id=110353 Go to Archive.is to create a permanent copy of this page - citation notes



Comments (1)

Sort By
Page 1 of 1
 
Gravatar
Le Coze

Citation: Microhedbergella pseudotrocoidea Michael 1973 brackets missing

Gravatar
Jeremy Young (UK)

corrected now, thanks

Page 1 of 1
 

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics