Specimens which cannot be assigned to established species
| Daughter taxa (time control age-window is: 0-800Ma) | ||||
| | | Pseudoplanomalina cheniourensis | |
| Pseudoplanomalina sp. Specimens which cannot be assigned to established species | ||||
Taxonomy
Original description: Test planispiral, bi-evolute, microperforate, periphery of chambers not rounded as in Globigerinelloides but subangular, with a distinct break in the peripheral round, better marked on the first chambers of the last whorl by a concentration of perforation cones giving it a peripheral pseudo-keel.
Entries in the Catalog of original descriptions: Pseudoplanomalina
Geological Range:
Last occurrence (top): within Albian Stage (100.50-112.95Ma, top in Albian stage). Data source: Total of range of species in this database
First occurrence (base): within Aptian Stage (112.95-126.30Ma, base in Aptian stage). Data source: Total of range of species in this database
Plot of range and occurrence data:
Moullade, M., Bellier, J. -P. & Tronchetti, G. (2002). Hierarchy of criteria, evolutionary processes and taxonomic simplification in the classification of Lower Cretaceous planktonic foraminifera. Cretaceous Research. 23(1): 111-148. gsReferences:
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Pseudoplanomalina compiled by the pforams@mikrotax project team viewed: 28-10-2021
Short stable page link: https://mikrotax.org/pforams/index.php?id=110462 Go to Archive.is to create a permanent copy of this page - citation notes |
Comments
(1)
original description Moullade, M.; Bellier, J.-P.; Tronchetti, G. (2002). Hierarchy of criteria, evolutionary processes and taxonomic simplification in the classification of Lower Cretaceous planktonic foraminifera. Cretaceous Research. 23(1), 111-148., available online at https://doi.org/10.1006/cres.2002.0304
page(s): pp. 133-134
thanks, i've added that