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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 ...

    Martin D. Brazeau, Sam Giles, Richard P. Dearden, Anna Jerve in Nature Ecology & Evolution (2020)