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Caudal ramus
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<p>The caudal ramus (plural: <i>caudal rami</i>) is a characteristic feature of primitive <a href="/facts/Crustacean/PBobIVJP">crustaceans</a>. Located on the anal somite (<a href="/facts/Telson/71eFnSJb">telson</a> segment), the caudal ramus is a pair of <a href="/facts/Appendage/lFv11d3f">appendage</a>-like or spine-like protrusions. Specific structures which are rod or blade-like are referred to as <i>caudal furca</i>. </p> <ul><li>Brusca, Gary J. & Richard C. Brusca, <i>Invertebrates</i>. 2003.</li></ul>