The phylogenetic position of Stenopelix valdensis from the Lower Cretaceous of Germany and the early fossil record of Pachycephalosauria

R. J. Butler, and R. M. Sullivan

2009

Article

Acta Palaeontologica Polonica 54(1):21-34

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Taxonomy:

• Stenopelix valdensis belongs to Stenopelix - Butler and Sullivan (2009)
• Graciliceratops mongoliensis belongs to Graciliceratops - Butler and Sullivan (2009)
• Ferganocephale belongs to Ornithischia - Butler and Sullivan (2009)
• Ferganocephale adenticulatum belongs to Ferganocephale - Butler and Sullivan (2009)