pforams@mikrotax - Mutabella mirabilis pforams@mikrotax - Mutabella mirabilis

Mutabella mirabilis

Classification: pf_cenozoic -> Globigerinitidae -> Mutabella -> Mutabella mirabilis
Sister taxa: M. mirabilis, M. sp.


Citation: Mutabella mirabilis Pearson, Norris & Empson 2001
taxonomic rank: Species

Catalog entries: Mutabella mirabilis

Type images:

NB These concise distinguishing features statements are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus.
They are being edited as the site is developed and comments on them are especially welcome.


Character matrix
test outline:Lobatechamber arrangement:Trochospiraledge view:Inequally biconvexaperture:Umbilical-extraumbilical
sp chamber shape:Globularcoiling axis:Low-moderateperiphery:N/Aaperture border:Thick flange
umb chbr shape:Globularumbilicus:Wideperiph margin shape:Broadly roundedaccessory apertures:Infralaminal
spiral sutures:Moderately depressedumb depth:Deepwall texture:Moderately pustuloseshell porosity:Microperforate: <1µm
umbilical or test sutures:Strongly depressedfinal-whorl chambers:4-4.5 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology

Most likely ancestor: Globigerinita glutinata - at confidence level 3 (out of 5). Data source: Pearson et al. 2001, p.131.

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within M7 zone (13.77-14.24Ma, top in Serravallian stage). Data source: Pearson et al. 2001
First occurrence (base): within M3 zone (17.54-19.30Ma, base in Burdigalian stage). Data source: Pearson et al. 2001

Plot of occurrence data:


Pearson, P. N., Norris, R. D. & Empson, A. (2001b). Mutabella mirabilis gen. et sp. nov., a Miocene microperforate planktonic foraminifer with an extreme level of intraspecific variability. Journal of Foraminiferal Research. 31: 120-132. gs


Mutabella mirabilis compiled by the pforams@mikrotax project team viewed: 24-6-2024

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