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): at top of H. planispira zone (100% up, 111.8Ma, in Albian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within L. cabri zone (119.05-120.55Ma, base in Aptian stage). Data source: Total of ranges 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:
Pseudoplanomalina compiled by the pforams@mikrotax project team viewed: 15-12-2024
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 |
This policy contains information about your privacy. By posting, you are declaring that you understand this policy:
This policy is subject to change at any time and without notice.
These terms and conditions contain rules about posting comments. By submitting a comment, you are declaring that you agree with these rules:
Failure to comply with these rules may result in being banned from submitting further comments.
These terms and conditions are subject to change at any time and without notice.
Comments (2)
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