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)![]() | Granddaughter taxa | |||
![]() | ![]() | Bathysiphon | ||
![]() | ![]() | Hippocrepina | ||
![]() | ![]() | Hyperammina | ||
![]() | ![]() | Jaculella | ||
![]() | ![]() | Nothia | ||
![]() | Psammosiphonella | |||
![]() | ![]() | Psammosphaera | ||
![]() | ![]() | Rhabdammina | ||
![]() | Rhizammina | |||
![]() | ![]() | ![]() | Saccammina | |
![]() | ![]() | Saccorhiza |
Catalog entries: Astrorhizida
Distinguishing features:
Parent taxon (bf_main):
This taxon: unilocular
Wall composition:
Final whorl chambers: 0->0 |
Geological Range:
Last occurrence (top): Extant. Data source: Total of range of species in this database
First occurrence (base): within Cretaceous Period (66.04-143.10Ma, 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
Lankester, E. R. (1885). Protozoa. In, The Encyclopedia Britannica, 9th Edition. 19: 830-866. gsReferences:
![]() |
Astrorhizida compiled by the bforams@mikrotax project team viewed: 13-7-2025
Short stable page link: https://mikrotax.org/bforams/index.php?id=2000008 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![]() ![]() |