The Dino Directory

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Select a letter to view dinosaurs whose name starts with that letter:

9 dinosaurs beginning with 'O'

NAME (GENUS) TAXONOMY AGE BODY SHAPE
Ouranosaurus Dinosauria, Ornithischia, Genasauria, Cerapoda, Ornithopoda, Euornithopoda, Iguanadontia, Euiguanadontia, Dryomorpha, Ankylopollexia, Iguanodontoidea Early Cretaceous Euornithopod
Opisthocoelicaudia Dinosauria, Saurischia, Sauropodomorpha, Sauropoda, Eusauropoda, Neosauropoda, Macronaria, Camarasauromorpha, Titanosauriformes, Titanosauria, Lithostrotia, Saltasauridae Late Cretaceous Sauropod
Ornithomimus Dinosauria, Saurischia, Theropoda, Neotherapoda, Tetanurae, Avetherapoda, Coelurosauria, Tyrannoraptora, Maniraptoriformes, Ornithomimosauria, Ornithomimidae Late Cretaceous Ornithomimosaur
Orodromeus Dinosauria, Ornithischia, Genasauria, Cerapoda, Ornithopoda, Euornithopoda Late Cretaceous Euornithopod
Oryctodromeus Dinosauria, Ornithischia Late Cretaceous Euornithopod
Oviraptor Dinosauria, Saurischia, Theropoda, Neotherapoda, Tetanurae, Avetherapoda, Coelurosauria, Tyrannoraptora, Maniraptoriformes, Maniraptora, Oviraptorosauria, Caenagnathoidea, Oviraptoridae, Oviraptorinae Late Cretaceous Small theropod
Ornitholestes Dinosauria, Saurischia, Theropoda, Neotherapoda, Tetanurae, Avetherapoda, Coelurosauria Late Jurassic Small theropod
Othnielia Dinosauria, Ornithischia, Genasauria, Cerapoda, Ornithopoda, Euornithopoda Late Jurassic Euornithopod
Omeisaurus Dinosauria, Saurischia, Sauropodomorpha, Sauropoda, Eusauropoda Mid Jurassic Sauropod
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