Variation in the skulls of theropod dinosaurs: the Late Triassic coelophysoid Coelophysis; the Early Jurassic ceratosaur Ceratosaurus; the Late Jurassic allosaur Allosaurus; the middle Cretaceous spinosaur Suchomimus; the Late Cretaceous dromaeosaur Velociraptor; the Late Cretaceous tyrannosaur Tyrannosaurus.

From Scott Sampson’s Dinosaur Odyssey

Variation in the skulls of theropod dinosaurs: the Late Triassic coelophysoid Coelophysis; the Early Jurassic ceratosaur Ceratosaurus; the Late Jurassic allosaur Allosaurus; the middle Cretaceous spinosaur Suchomimus; the Late Cretaceous dromaeosaur Velociraptor; the Late Cretaceous tyrannosaur Tyrannosaurus.

From Scott Sampson’s Dinosaur Odyssey

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