[D] Achelousaurus horneri [Su] [sG] [T]
Describer
Sampson, 1994
Time
Cretaceous Late Campanian
Classification
Ornithischia Genasauria Cerapoda Marginocephalia Ceratopia Neoceratopia Ceratopidae Pachyrhinosaurinae
Diet
Herbivore
Fossilsite
Two Medicine Formation, Montana, US
Length
6 meter
Info
Genus - Typespecies - Skull
Achelousaurus has two large spikes on the frill, and udults have lumpy mounds for both brow and nose horns.
Etymology
Greek Achelous (mythical river god) + Greek sauros (lizard) \\\\\\\"horneri\\\\\\\" (for Jack Horner, paleontologist).
Holotype
MOR 485 Referred specimens: MOR 591, MOR 571. Achelousaurus horneri had well developed supraorbital and nasal bosses similar to those of Pachyrhinosaurus, although the nasal boss was slightly smaller and the supraorbital bosses weres lightly larger. Both may have been used for intraspecific combat. It also possesed twin parietal spikes, a feature it shared with Einiosaurus.