Q: What were Metriacanthosaurids?

A: Metriacanthosaurids were a family of carnivorous theropod dinosaurs.

Q: How large were some Metriacanthosaurids?

A: Some Metriacanthosaurids were 30 ft (10 m) long.

Q: What type of dinosaurs are Metriacanthosaurids?

A: Metriacanthosaurids are carnosaurs.

Q: How were Metriacanthosaurids classified previously?

A: At first, Metriacanthosaurids were classified in the Megalosauridae or Allosauridae.

Q: What is the current classification of Metriacanthosaurids?

A: Metriacanthosaurids are now put in their own family.

Q: What was described recently in 2008 related to Metriacanthosaurids?

A: A gigantic tooth, which may come from a giant metriacanthosaurid, was described recently in 2008.

Q: What were Metriacanthosaurids known for?

A: Metriacanthosaurids tended to be large predators.