Neural Crest and the Origin of Vertebrates: A New Head

@article{Gans1983NeuralCA,
  title={Neural Crest and the Origin of Vertebrates: A New Head},
  author={Carl Gans and R. Glenn Northcutt},
  journal={Science},
  year={1983},
  volume={220},
  pages={268 - 273}
}
Most of the morphological and functional differences between vertebrates and other chordates occur in the head and are derived embryologically from muscularized hypomere, neural crest, and epidermal (neurogenic) placodes. In the head, the neural crest functions as mesoderm and forms connective, skeletal, and muscular tissue. Both the neural crest and the epidermal placodes form special sense organs and other neural structures. These structures may be homologous to portions of the epidermal… 

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