A "Triceratops" and a "Stegosaurus" are also both on display, among many other specimens. These remains were split between several species, including stegosaurus, camptosaurus, diplodocus, and edmontosaurus. It lived alongside European species of" Allosaurus" ("A. europaeus"), "Ceratosaurus", "Stegosaurus" and presumably "Camptosaurus". Thyreophora includes Stegosauria (like the armored "Stegosaurus") and Ankylosauria (like "Ankylosaurus"). The two dinosaurs are a mother Stegosaurus and a baby Stegosaurus. These first bones became the holotype of "Stegosaurus armatus". "Stegosaurus" and related genera were herbivores. The deep dentary is almost identical in shape to that of "Stegosaurus", albeit much smaller. A year later the first hatchling "Stegosaurus" tracks were reported. The tip of the beak was toothless, as in "Stegosaurus". Sophie the "Stegosaurus" is the most nearly complete fossil specimen of a "Stegosaurus". In 1881, he named a third species "Stegosaurus" "affinis", based only on a hip bone. The museum grounds feature a life-sized statue of a "Stegosaurus". The function of "Stegosaurus"' plates has been much debated. Later forms like "Stegosaurus" or "Hesperosaurus" had twelve or thirteen.