A dinosaur
Its a dinosaur.
There are no animals today that look anything like Stegosaurus. If there were, it might be easier to determine what Stegosaurus's plates were used for.
I am a Stegosaurus lily
There is no animal called the sitta osaurus. There is however, a stegosaurus. A stegosaurus was a herbivore that lived during the Jurassic and Cretaceous periods.
The stegosaurus can be both male or female, it is not a single animal it is an entire species like the T-rex or Aptasaurus.
There are no animals today that resemble Stegosaurus. That is one reason why it is so difficult to figure out what their plates were used for.
Stegosaurus was a dinosaur, which would put it in the class reptilia. Some, however, have proposed moving dinosaurs to their own class.
Yes, Stegosaurus was a prey animal. Baby Stegosaurus would have made an easy meal for almost any carnivorous dinosaur, even small ones like Ornitholestes. However, Stegosaurus lived in herds and the parents would have done their best to protect the youngsters. Adult Stegosaurus had predators too, though. Carnivorous dinosaurs large enough to hunt adult Stegosaurus include Ceratosaurus, Torvosaurus, Allosaurus, Epanterias, and Saurophaganax.
There are four currently accepted species in the genus Stegosaurus. They are Stegosaurus armatus, Stegosaurus stenops, Stegosaurus sulcatus, and Stegosaurus longispinus.
Othniel Charles Marsh named Stegosaurus in 1877. Its fossils were discovered near Morrison, Colorado shortly before that. Originally, he thought that Stegosaurus was an aquatic, turtle like animal until more specimens were discovered.
The remains of about 80 different Stegosaurus have been discovered. They belong to four different species, Stegosaurus armatus, Stegosaurus stenops, Stegosaurus sulcatus, and Stegosaurus longispinus.
Stegosaurus had one of the smallest brain to body ratios of any animal known to have existed. Therefor, Ankylosaurus had a larger brain to body ratio. This does not necessarily mean that Stegosaurus were not as smart, however. The actual intelligence of an animal can not truly be determined by only fossils, because some animals are smarter than others that have larger brain to body ratios, although it is relatively rare.