Jaw growth and replacement in Ophryotrocha labronica (Polychaeta, Dorvilleidae)

  title={Jaw growth and replacement in Ophryotrocha labronica (Polychaeta, Dorvilleidae)},
  author={Hannelore Paxton},
Ophryotrocha labronica, as typical for Eunicida, has a complex jaw apparatus consisting of ventral mandibles and dorsal maxillae. Mandibles are not replaced but are retained throughout life. Larval mandibles have adult-sized cutting plates but their proximal shafts lengthen and enlarge as the worm grows. The maxillary apparatus of O. labronica undergoes three moults or replacements. The initial, or larval maxillae, consisting of two paired basal plates and two paired free denticles, develop in… CONTINUE READING

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