Jaws and teeth of the earliest bony fishes

@article{Botella2007JawsAT,
  title={Jaws and teeth of the earliest bony fishes},
  author={H. Botella and H. Blom and Markus Dorka and P. Ahlberg and P. Janvier},
  journal={Nature},
  year={2007},
  volume={448},
  pages={583-586}
}
Extant jawed vertebrates, or gnathostomes, fall into two major monophyletic groups, namely chondrichthyans (cartilaginous fishes) and osteichthyans (bony fishes and tetrapods). Fossil representatives of the osteichthyan crown group are known from the latest Silurian period, 418 million years (Myr) ago, to the present. By contrast, stem chondrichthyans and stem osteichthyans are still largely unknown. Two extinct Palaeozoic groups, the acanthodians and placoderms, may fall into these stem groups… Expand
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