Tylocephale (meaning "swollen head", from the Greek τυλη meaning 'callus' or 'hard swelling' and κεφαλη meaning 'head') is a genus of pachycephalosaurid dinosaur from the Late Cretaceous period. It was a herbivorous dinosaur estimated to have been about 1.4 metres (4.6 ft) in length. It had the tallest dome of any known pachycephalosaur.

Temporal range: Late Campanian, 80–70 Ma
Tylocephale skull.jpg
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Ornithischia
Family: Pachycephalosauridae
Genus: Tylocephale
Maryańska & Osmólska, 1974
T. gilmorei
Binomial name
Tylocephale gilmorei
Maryańska & Osmólska, 1974
Life restoration

Tylocephale lived during the Campanian stage, around 75 million years ago. It was discovered in the Khulsan region of Mongolia. The type species is T. gilmorei, described by Teresa Maryańska and Osmólska in 1974.[1]

The pachycephalosaurids evolved in Asia and then migrated into North America, thus it is likely that Tylocephale migrated back into Asia. It is closely related to Prenocephale[2]

See alsoEdit


  1. ^ Sullivan, R.M (2006). "A taxonomic review of the Pachycephalosauridae (Dinosauria: Ornithischia)." in: Lucas, S. G. and Sullivan, R.M., eds., (2006), Late Cretaceous vertebrates from the Western Interior. New Mexico Museum of Natural History and Science Bulletin 35.
  2. ^ Dixon, Dougal (2007). The world encyclopedia of dinosaurs & prehistoric creatures (Hardback ed.). London: Lorenz. p. 357. ISBN 978-0754817307.

External linksEdit