-proc·ta
I.\ˈpräktə\  noun plural combining form 
Etymology: New Latin, from Greek prōktos 
 : animals having a (specified) type of anus  — in names of higher taxa
< Entoprocta >
< Ectoprocta >
II.noun combining form 
Etymology: New Latin, from Greek prōktos 
 : animal having a (specified) type of anus or buttocks  — in generic names of animals
< Dasyprocta >
I.
< Entoprocta >
< Ectoprocta >
II.
< Dasyprocta >