Evolutionary origins and development of saw-teeth on the sawfish and sawshark rostrum

Published on 02. September 2015 Evolutionary origins and development of saw-teeth on the sawfish and sawshark rostrum (Elasmobranchii; Chondrichthyes) Monique Welten, Moya Meredith Smith, Charlie Underwood, Zerina Johanson ABSTRACT: A well-known characteristic of chondrichthyans (e.g. sharks, rays) is their covering of external skin denticles (placoid scales), but less well understood is the wide morphological diversity

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