Does mutual sexual selection explain the evolution of head crests in pterosaurs and dinosaurs

@article{Hone2012DoesMS,
  title={Does mutual sexual selection explain the evolution of head crests in pterosaurs and dinosaurs},
  author={David W. E. Hone and Darren Naish and Innes C. Cuthill},
  journal={Lethaia},
  year={2012},
  volume={45},
  pages={139-156}
}
Hone, D.W.E., Naish, D. & Cuthill, I.C. 2011: Does mutual sexual selection explain the evolution of head crests in pterosaurs and dinosaurs? Lethaia, Vol. 45, pp. 139–156. Cranial ornamentation is widespread throughout the extinct non-avialian Ornithodira, being present throughout Pterosauria, Ornithischia and Saurischia. Ornaments take many forms, and can be composed of at least a dozen different skull bones, indicating multiple origins. Many of these crests serve no clear survival… 
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