Any one of the abdominal appendages of a crustacean, especially one of the posterior ones, which are often larger than the rest, and different in structure, and are used chiefly in locomotion. See Illust. of Crustacea, and Stomapoda.
lateral plate, located on either side of the last abdominal segment, useful in backward swimming
The terminal appendage of the body, belonging to the sixth pleonite. It consists of a basal segment, the protopod, and primitively two uniarticulate rami, a larger endopod and a smaller exopod.
fan-shaped, paired posterior abdominal appendage in certain crustaceans, e.g., lobsters or shrimp, that are used for swimming
one member of three most posterior paired biarmous appendages of the abdomen; a paired appendage of the urosome, consisting of a peduncle and paired rami
double projections protruding from the anterior end of the abdomen. The inner pair are called the endopods of the uropod and the outer pair are the exopods of the uropod
Posteriormost appendage of many crustaceans.
paired biramous appendage on sixth abdominal segment. lateral parts of "tail fan".