Uropods are posterior found on a wide variety of . They typically have functions in locomotion.
Definition
Uropods are often defined as the appendages of the last body segment of a crustacean.
An alternative definition suggested by Frederick R. Schram restricts the term to those structures arising from the segment before the anal segment (the segment which carries the
anus).
Under this latter definition, the appendages of the anal segment are
caudal ramus, which are analogous to uropods.
Form
Uropods are typically
biramous – comprising an endopod and an exopod. The exopod is typically the larger, and may be divided in two by a transverse suture known as the diaeresis.
The uropods may work in concert with the
telson to form a "tail fan".
