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meaning: "Knob head claw"
Named By: M. C. Coombs in 1979
Time Period: 23.03-5.33 Ma Miocene
Location: USA
Size: Exact details unavailable
Diet: Herbivore
Fossil(s): Many specimens
Classification: | Chordata | Mammalia | Perissodactyla | Chalicotherioidea | Chalicotheriidae | Schizotheriinae |

Tylocephalonyx is an extinct dome-headed chalicothere from the Miocene in North America. It may have used its "dome" in the same way as the pachycephalosaurs. Tylocephalonyx is related to the modern horse, rhino, and tapir.

Read more about Tylocephalonyx at Wikipedia
PaleoCodex is a weekend hack by Saurav Mohapatra