Pectoral Morphology in Doliodus: Bridging the ‘Acanthodian’-Chondrichthyan Divide

@article{Maisey2017PectoralMI,
  title={Pectoral Morphology in Doliodus: Bridging the ‘Acanthodian’-Chondrichthyan Divide},
  author={John G. Maisey and Randall F. Miller and Alan Pradel and John S. S. Denton and Allison W. Bronson and Philippe Janvier},
  journal={American Museum Novitates},
  year={2017},
  pages={1 - 15}
}
ABSTRACT Doliodus problematicus (NBMG 10127), from the Lower Devonian of New Brunswick, Canada (approx. 397–400 Mya) is the earliest sharklike jawed vertebrate (gnathostome) in which the pectoral girdle and fins are well preserved. Its pectoral endoskeleton included sharklike expanded paired coracoids, but Doliodus also possessed an “acanthodian-like” array of dermal spines, described here for the first time. Doliodus provides the strongest anatomical evidence to date that chondrichthyans arose… 

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