A Palaeozoic shark with osteichthyan-like branchial arches

@article{Pradel2014APS,
  title={A Palaeozoic shark with osteichthyan-like branchial arches},
  author={Alan Pradel and John G. Maisey and Paul Tafforeau and Royal H. Mapes and Jon Mallatt},
  journal={Nature},
  year={2014},
  volume={509},
  pages={608-611}
}
The evolution of serially arranged, jointed endoskeletal supports internal to the gills—the visceral branchial arches—represents one of the key events in early jawed vertebrate (gnathostome) history, because it provided the morphological basis for the subsequent evolution of jaws. However, until now little was known about visceral arches in early gnathostomes, and theories about gill arch evolution were driven by information gleaned mostly from both modern cartilaginous (chondrichthyan) and… Expand
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