Fig. 6

a–j Diagram of the infraciliature, and formation patterns of ventral cirri (dotted lines connecting cirri that develop from the same cirral streaks, arrows mark the buccal cirri) (a, c, e–j) and dorsal ciliature (b, d). a Parasincirra sinica. b Parasincirra sinica, Amphisiella annulata, Uroleptoides longiseries, Parabistichella variabilis, Bistichella cystiformans and Keronopsis helluo. c Lamtostyla salina. d Lamtostyla salina and Orthoamphisiella breviseries. e Amphisiella annulata. f Uroleptoides longiseries. g Parabistichella variabilis. h Orthoamphisiella breviseries. i Bistichella cystiformans. j Keronopsis helluo [19, 22, 24,25,26, 47, 48]