Catalog entries: Mutabella mirabilis
Type images:
Character matrix
test outline: | Lobate | chamber arrangement: | Trochospiral | edge view: | Inequally biconvex | aperture: | Umbilical-extraumbilical |
sp chamber shape: | Globular | coiling axis: | Low-moderate | periphery: | N/A | aperture border: | Thick flange |
umb chbr shape: | Globular | umbilicus: | Wide | periph margin shape: | Broadly rounded | accessory apertures: | Infralaminal |
spiral sutures: | Moderately depressed | umb depth: | Deep | wall texture: | Moderately pustulose | shell porosity: | Microperforate: <1µm |
umbilical or test sutures: | Strongly depressed | final-whorl chambers: | 4-4.5 | N.B. These characters are used for advanced search. N/A - not applicable |
Most likely ancestor: Globigerinita glutinata - at confidence level 3 (out of 5). Data source: Pearson et al. 2001, p.131.
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. gsReferences:
Mutabella mirabilis compiled by the pforams@mikrotax project team viewed: 9-9-2024
Short stable page link: https://mikrotax.org/pforams/index.php?id=104170 Go to Archive.is to create a permanent copy of this page - citation notes |