الديناصورات

Ojoceratops fowleri

Ojoceratops fowleri

Cretaceous Late Herbivore

Oksoko avarsan

Oksoko avarsan

Cretaceous Late Omnivore

Oligocolius brevitarsus

Oligocolius brevitarsus

Herbivore

Oligocorax stoeffelensis

Oligocorax stoeffelensis

Carnivore

Oligonomus milleri

Oligonomus milleri

Carnivore

Olorotitan arharensis

Olorotitan arharensis

Cretaceous Late Herbivore

Omeisaurus fuxiensis

Omeisaurus fuxiensis

Jurassic Middle Herbivore

Omeisaurus junghsiensis

Omeisaurus junghsiensis

Jurassic Middle Herbivore

Omeisaurus luoquanensis

Omeisaurus luoquanensis

Jurassic Late Herbivore

Omeisaurus maoianus

Omeisaurus maoianus

Jurassic Late Herbivore

Omeisaurus puxiani

Omeisaurus puxiani

Jurassic Middle Herbivore

Omeisaurus tianfuensis

Omeisaurus tianfuensis

Jurassic Middle Herbivore

Oobardjidama foulkesi

Oobardjidama foulkesi

Cretaceous Early Herbivore

Oohkotokia

Oohkotokia

Cretaceous Late Herbivore

Opisthocoelicaudia skarzynskii

Opisthocoelicaudia skarzynskii

Cretaceous Late Herbivore

Osteodontornis

Osteodontornis

Carnivore

Opisthodactylus horacioperezi

Opisthodactylus horacioperezi

Carnivore

Opisthodactylus kirchneri

Opisthodactylus kirchneri

Carnivore

Oplosaurus armatus

Oplosaurus armatus

Cretaceous Early Herbivore

Oraristrix brea

Oraristrix brea

Carnivore

Oreopholus orcesi

Oreopholus orcesi

Carnivore

Oreothlypis celata

Oreothlypis celata

Carnivore

Orienantius ritteri

Orienantius ritteri

Cretaceous Early Carnivore

Ornithischia

Ornithischia

Cretaceous Early Herbivore

Ornithoides oshiensis

Ornithoides oshiensis

Cretaceous Late Carnivore

Ornitholestes

Ornitholestes

Jurassic Late Carnivore

Ornithomimidae

Ornithomimidae

Cretaceous Late Herbivore

Ornithomimipus angustus

Ornithomimipus angustus

Cretaceous Late Carnivore

Ornithomimipus gracilis

Ornithomimipus gracilis

Cretaceous Early Carnivore

Ornithomimipus jaillardi

Ornithomimipus jaillardi

Cretaceous Late Carnivore

Ornithomimosauria

Ornithomimosauria

Cretaceous Late Herbivore

Ornithomimus

Ornithomimus edmontonicus

Cretaceous Late Omnivore

Ornithomimus minutus

Ornithomimus minutus

Herbivore

Senqutrisauropus priscus

Senqutrisauropus priscus

Triassic Late Herbivore

Ornithopoda

Ornithopoda

Cretaceous Early Herbivore

Ornithopsis

Ornithopsis

Cretaceous Early Herbivore

Ornithuromorpha

Ornithuromorpha

Cretaceous Late Carnivore

Orodromeus

Orodromeus

Cretaceous Late Herbivore

Orodromeus makelai

Orodromeus makelai

Cretaceous Late Herbivore

Orodrominae

Orodrominae

Cretaceous Late Herbivore

Ortalis pollicaris

Ortalis pollicaris

Herbivore

Orthonyx hypsilophus

Orthonyx hypsilophus

Carnivore

Ortyxelos meiffrenii

Ortyxelos meiffrenii

Carnivore

Oryctodromeus

Oryctodromeus

Cretaceous Early Herbivore

Osmakasaurus depressus

Osmakasaurus depressus

Jurassic Late Herbivore

Ostendichnus bilobatus

Ostendichnus bilobatus

Cretaceous Late Carnivore

Osteodontornis orri

Osteodontornis orri

Carnivore

Otogornis genghisi

Otogornis genghisi

Cretaceous Early Carnivore