Genera of family “Soritidae”

Amphisorus

Large discoidal test, biconcave with thickened rims. Cyclic chambers subdivided by chamberlets. Apertures consist of numerous pores on the peripheral margin arranged in two or more alternating rows.

Androsina

Flat test, early stage planispirally coiled and involute, chambers rapidly increasing in breadth so that test becomes peneropliform, then flabelliform and finally ends in broad strongly arched chambers.

Archaias

Compressed test with rounded periphery, early stage planispiral and involute with a thickened central boss. later chambers become cyclical.

Broeckina

Discoidal test with annular chambers that have internal subdivisions. Living specimens are green due to chlorophycean endosymbionts. Occurence: Carribean Sea.

Cyclorbiculina

Large discoidal test, early stages planispiral and involute, producing a central thickened part of the test, later chambers become annular.

Marginopora

Large discoidal test, biconcave with thickened periphery, apertures consist of numerous small circular openings on the peripheral wall.

Parasorites

Discoidal test with annular chambers that are subdivided into chamberlets. Green colour in living specimens is caused by chlorophycean endosymbionts. Occurence: Indopacific.

Sorites

Discoidal test, early chambers are peneroplid, later chambers become annular and divided into chamberlets that are connected by a stolon system. Apertures occur along the peripheral margin, they are more or less circular and surrounded by a calcified rim. Living specimens have a brownish colour due to Symbiodinium endosymbionts.