NB This site is under active development, current content in the main database is primarily from Bolli et al 1994, Hayward et al. 2012, Holbourn et al. 2013, Holbourn and Kaminski 1997, Alegret & Thomas 2001, and Katz et al. 2003. It is intended to expand and develop this to provide rather comprehensive coverage of Mesozoic and Cenozoic deep-sea benthic foraminifera.
Daughter taxa (time control age-window is: 0-800Ma)![]() | ||||
![]() | ![]() | Rhizammina indivisa | ||
Rhizammina sp. Specimens which cannot be assigned to established species |
Catalog entries: Rhizammina
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.
Wall composition:
TEST: elongate-cylindrical, unilocular, APERTURE: circular, terminal, |
Final whorl chambers: 1->1 |
Geological Range:
Last occurrence (top): Extant. Data source: Total of range of species in this database
First occurrence (base): within Early Cretaceous Epoch (100.50-143.10Ma, base in Berriasian stage). Data source: Total of range of species in this database
Plot of occurrence data:
NB The ranges given for genera and higher taxa are the total ranges of species included in that taxon in this database - so the true total range of the taxon will usually be longer
Brady, H. B. (1879b). Notes on some of the reticularian Rhizopoda of the Challenger Expedition, Part I. On new or little known Arenaceous types. Quarterly Journal of Microscopical Science. 19: 20-63. gs References:
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Rhizammina compiled by the bforams@mikrotax project team viewed: 13-7-2025
Short stable page link: https://mikrotax.org/bforams/index.php?id=2000153 Go to Archive.is to create a permanent copy of this page - citation notes |
bforams@mikrotax has been supported by US IODP Science Support Program and by the Geologic TimeScale Foundation![]() ![]() |