Rostrum (anatomy)

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The rostrum (beak) of a bottlenose dolphin

In anatomy, the term rostrum (from the Latin rostrum meaning beak) is used for a number of phylogenetically unrelated structures in different groups of animals.

Invertebrates

  • In crustaceans, the rostrum is the forward extension of the carapace in front of the eyes.[1] It is generally a rigid structure, but can be connected by a hinged joint, as seen in Leptostraca.[2]

Vertebrates

The beak or snout of a vertebrate may also be referred to as the rostrum.

See also

References

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  7. Wueringer BE, Squire Jr L, Kajiura SM, Hart NS and Collin SP (2012) "The function of the sawfish's saw" Current Biology, 22 (5): R150-R151. doi:10.1016/j.cub.2012.01.055

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fr:Rostre