Solitary,colonial or compound.
Bottom living.
Body form and size variable.
Test permanent,well developed and thick.
Atrium opens dorsally by atriopore.
Pharynx large with many persistent gill-slits.
Sexes united
Larva free-swimming and highly developed.
Stolon simple
Adult sessile after retrogressive metamorphosis
Tail are lost and brain reduced to a dorsal ganglion.
Bottom living.
Body form and size variable.
Test permanent,well developed and thick.
Atrium opens dorsally by atriopore.
Pharynx large with many persistent gill-slits.
Sexes united
Larva free-swimming and highly developed.
Stolon simple
Adult sessile after retrogressive metamorphosis
Tail are lost and brain reduced to a dorsal ganglion.
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