Dichotomous key to families of the Flosculariaceae

1 Adults planktonic, within a loose gelatinous matrix; colonies vary from 1 adult with ≥ 1 juveniles to> 300 individuals; trophi unique: asymmetrical unci, teeth of left uncus much longer than on the right................ Conochilidae Harring, 1913

1’ Adults sessile, facultative sessile, or planktonic animals, usually within a tube of varied construction (gelatinous, pipes, or pellets); solitary or in intra- or inter-species colonies; trophi not as above, either symmetrical or asymmetrical, with teeth of right uncus much longer than on the left............................................ Flosculariidae Remane, 1933