When music star Prince changed his name to an unpronounceable glyph, everyone still called him “Prince.” Similar confusion surrounds the dinosaur Apatosaurus, which many still refer to as "Brontosaurus."

Brachylophosaurus may be its official name, but many affectionately know this relatively "new" dinosaur as "Elvis," due to its unusual head crest that resembles the famous rock 'n' roll singer's hair. A specimen named for another great --Leonardo--was honored by the Guinness Book of Records as being "the best preserved dinosaur remains in the world."

Although Deinonychus was only about as big as a two-passenger compact car, every inch of this dinosaur contributed to its reputation as being one of the world’s deadliest dinosaurs.

Today, there's some controversy about Iguanodon. Some paleontologists argue that many of the dinosaurs known as Iguanodon are classified incorrectly, leaving only one or two true Iguanodon species.

Spinosaurus holds the world record for being the largest known carnivorous dinosaur, given its impressive length and 9.9-ton build.

The Tyrannosaurus body could extend the entire width of a tennis court. Up to seven tons of muscle and other tissues filled out the rest of its sturdy frame. This was a monster carnivore that must have terrified all other dinosaurs during the Late Cretaceous.