Caudal ramus

The caudal ramus (plural: caudal rami) is a characteristic feature of primitive crustaceans.

Located on the anal somite (telson segment), the caudal ramus is a pair of appendage-like or spine-like protrusions.

Specific structures which are rod or blade-like are referred to as caudal furca.

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Cyclops ( Maxillopoda : Copepoda ), showing the caudal rami (bottom right)