Visible chambers
1
2
2 or more
3 or 4 on each side
5 or more
7 or more in last whorl
more than 30
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Wall Material
agglutinated
calcareous
microgranular
porcelaneous
proteinaceous
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Feature
none
aperture: crown
aperture: elongate slit
aperture: in row or rows
aperture: with lip
apertures: along sutures
arborescent or branched
arms or spines
chambers: inner chambers
chamber arrangment: equitant
chambers: strongly inflated
impression of substrate
keel: 1 or more
neck: normal
neck: pronounced
perforate
ponticuli
pustules: many
ribs
ribs: square-like
sutures: strongly elevated
sutures: twisted stellate
test: compressed
test: circular in section
test: ovate in section
tooth: simple
tooth: bifid
tube: entosolenian
wall material: with foraminifera
wall material: with spicules
wall structure: schwagerinid
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