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
Ellipsoidinidae Aperture terminal or subterminal, with a slit, elongate oval, or lunate shape; test uniserial or biserial; internal semi-tube-like toothplate.
Pleurostomellidae Aperture facing one side near terminus, usually with hood above; apertural shape hemicircular with two small teeth or tripartite; test uniserial, biserial, or triserial; internal semi-tube-like toothplate.
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. They are being edited as the site is developed and comments on them are especially welcome.
Description
Wall composition:calcareous-hyaline
Search data:
Final whorl chambers: ->0
The morphological data given here can be used on the advanced search page. See also these notes
Biogeography and Palaeobiology
Biostratigraphic distribution
Geological Range: Last occurrence (top): Extant. Data source: Total of range of species in this database First occurrence (base): within Jurassic Period (143.10-201.36Ma, base in Hettangian 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
Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Neptune data: this is a higher taxon page so Neptune data is not plotted. For the customisable plot option go to a genus page Parent: Nodosariana
References:
Mikhalevich, V. I. (1980). Sistematika i evolyutsiya foraminifera v svete novykh dannykh po ikh tsitologii i ultrastrukture [Systematics and evolution of foraminifera in the light of new data on their cytology and ultrastructure]. Trudy Zoologicheskogo Instituta Academiya Nauk SSSR. 94: 42-61. gs
Polymorphinida compiled by the bforams@mikrotax project teamviewed: 13-7-2025
