Updated 23 12 2019Species: I. challengeri. Meaning of name: Irritator. Brazil, Albian stage of the early Cretaceous. Classification: Theropoda, Tetanurae, Spinosauria.Length: 8m.Lifestyle: Piscivore/Carnivore.Background is a photo of Exmouth beach. This pencil drawing was inspired by a painting of a Tyrannosaurus by the brilliant paleo artist Gregory S. Paul.