(Order Decapoda):
Transverse groove across outer branch (exopod) of uropod; may divide exopod into two movable parts [Stachowitsch, 1992].
(Order Mysida):
Transverse suture superficially subdividing one or both branched of uropod, or antennal scale [Stachowitsch, 1992].
(Superorder Syncarida):
In anaspidacean, transverse suture superficially dividing outer branch (exopod) of uropod [Stachowitsch, 1992].
(Order Euphausiacea):
Transverse groove across outer branch (exopod) of uropod in certain euphausiaceans [Stachowitsch, 1992].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.