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Article
Open AccessShark mandible evolution reveals patterns of trophic and habitat-mediated diversification
Environmental controls of species diversity represent a central research focus in evolutionary biology. In the marine realm, sharks are widely distributed, occupying mainly higher trophic levels and varied die...
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Endochondral bone in an Early Devonian ‘placoderm’ from Mongolia
Endochondral bone is the main internal skeletal tissue of nearly all osteichthyans—the group comprising more than 60,000 living species of bony fishes and tetrapods. Chondrichthyans (sharks and their kin) are ...