Dinossauros

Ortyxelos meiffrenii

Ortyxelos meiffrenii

Carnivore

Oryctodromeus cubicularis

Oryctodromeus cubicularis

Cretaceous Early Herbivore

Ostendichnus bilobatus

Ostendichnus bilobatus

Cretaceous Late Carnivore

Osteodontornis orri

Osteodontornis orri

Carnivore

Otis lambrechti

Otis lambrechti

Carnivore

Otogornis genghisi

Otogornis genghisi

Cretaceous Early Carnivore

Otouphepus declivis

Otouphepus declivis

Jurassic Early Carnivore

Otozoum

Otozoum

Jurassic Early Herbivore

Otozoum grandcombensis

Otozoum grandcombensis

Triassic Late Herbivore

Otozoum minus

Otozoum minus

Jurassic Early Herbivore

Otus frutuosoi

Otus frutuosoi

Carnivore

Otus grucheti

Otus grucheti

Carnivore

Otus guildayi

Otus guildayi

Carnivore

Otus mauli

Otus mauli

Carnivore

Otus murivorus

Otus murivorus

Carnivore

Otus sauzieri

Otus sauzieri

Carnivore

Ouranosaurus

Ouranosaurus

Cretaceous Late Herbivore

Ouranosaurus nigeriensis

Ouranosaurus nigeriensis

Cretaceous Early Herbivore

Ovaloolithidae

Ovaloolithidae

Cretaceous Early Herbivore

Ovaloolithus

Ovaloolithus

Cretaceous Late Herbivore

Ovaloolithus chinkangkouensis

Ovaloolithus chinkangkouensis

Cretaceous Late Herbivore

Ovaloolithus laminadermus

Ovaloolithus laminadermus

Cretaceous Late Herbivore

Ovaloolithus sangpingensis

Ovaloolithus sangpingensis

Cretaceous Late Herbivore

Ovaloolithus tenuisus

Ovaloolithus tenuisus

Cretaceous Late Herbivore

Oviraptoridae

Oviraptoridae

Cretaceous Late Omnivore

Oviraptorinae

Oviraptorinae

Cretaceous Late Omnivore

Suzhousaurus megatherioides

Suzhousaurus megatherioides

Cretaceous Early Herbivore

Sylvia communis

Sylvia communis

Carnivore

Synthliboramphus hypoleucus

Synthliboramphus hypoleucus

Carnivore

Pachycephalosaurus

Pachycephalosaurus wyomingensis

Cretaceous Late Herbivore

Pachycorioolithus jinyunensis

Pachycorioolithus jinyunensis

Cretaceous Early Carnivore

Synthliboramphus scrippsi

Synthliboramphus scrippsi

Carnivore

Syrmaticus

Syrmaticus

Pachyrhinosaurus

Pachyrhinosaurus

Cretaceous Late Herbivore

Pachyrhinosaurus perotorum

Pachyrhinosaurus perotorum

Cretaceous Late Herbivore

Pakisauridae

Pakisauridae

Cretaceous Late Herbivore

Syrrhaptes paradoxus

Syrrhaptes paradoxus

Carnivore

Pakudyptes hakataramea

Pakudyptes hakataramea

Carnivore

Palaeastur atavus

Palaeastur atavus

Carnivore

Palaeeudyptes

Palaeeudyptes

Carnivore

Tachycineta speleodytes

Tachycineta speleodytes

Insectivore

Palaeeudyptes marplesi

Palaeeudyptes marplesi

Carnivore

Palaegithalus cuvieri

Palaegithalus cuvieri

Insectivore

Palaelodus ambiguus

Palaelodus ambiguus

Carnivore

Talantatos proudlocki

Talantatos proudlocki

Omnivore

Palaeoborus rosatus

Palaeoborus rosatus

Carnivore

Palaeobyas cracrafti

Palaeobyas cracrafti

Carnivore

Palaeochenoides miocaenus

Palaeochenoides miocaenus

Carnivore