Press Release American Museum of Natural History 16. April 2014 —————- Skull structures of 325-million-year-old shark fossil show that living sharks are evolutionarily advanced The skull of a newly discovered 325-million-year-old shark-like species suggests that early cartilaginous and bony fishes have more to tell us about the early evolution of jawed vertebrates—including humans—than do modern
Published online on 16. April 2014 A Palaeozoic shark with osteichthyan-like branchial arches Alan Pradel, John G. Maisey, Paul Tafforeau, Royal H. Mapes, Jon Mallatt ABSTRACT: 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