All Monsters (6)

• Centrosaurus - Cretaceous herbivore that seems to have lived in very large herds
  OSRIC
• Diceratops - Cretaceous herbivore; extremely rare compared to triceratops
  OSRIC
• Monoclonius - Cretaceous herbivore with only one horn
  OSRIC
• Pentaceratops - Cretaceous herbivore, resembling a triceratops with a longer neck-frill and two extra horns protruding from under its eyes
  OSRIC
• Styracosaurus - Cretaceous herbivore with a distinctive spiky neck-frill; about half the size of triceratops
  OSRIC
• Triceratops - Massive (12' to the shoulder, almost 40' long), aggressive, herbivorous dinosaurs with a protective crest behind the head, and three long horns
  OSE, OSRIC