Achelousaurus
Achelousaurus was a herbivorous dinosaur first described by paleontologist D. Scott Sampson in 1995, based on its fossil remains discovered in Montana (USA), in North America. The scientific name Achelousaurus horneri was chosen in honor of the American paleontologist Jack Horner. A skull of an adult Achelousaurus dinosaur is on display at the Museum of the Rockies in Bozeman, Montana. In terms of its impressive appearance, this prehistoric animal is very similar to the dinosaur Pachyrhinosaurus
Achelousaurus Media
Jack Horner led the team that discovered Achelousaurus. A. horneri was named after him
Holotype skull MOR 485 in front view
TMP 2002.76.1, which may be a specimen of Achelousaurus, Pachyrhinosaurus, or a new taxon, in the Royal Tyrrell Museum
Holotype skull in right side view
Achelousaurus skull diagram with added explanations
Parietosquamosal frill bones of three skulls; MOR 485, 571 and 591
Snout regions of MOR 591 and 485
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and the dinosaur Einiosaurus - both were herbivores and lived in forested areas, and their obvious hair ornaments were intended to attract females during the rut. Achelousaurus had the shield on the back of the head very well developed, provided with two slits that greatly reduced its weight. Above the eyes it had two bony protrusions, and on the nose instead of the curved horn (which appears in Einiosaurus) it had another elongated bony protrusion.