THE PREHISTORIC A–Z
Explore the letter P
A research index of dinosaur genus names, including names whose status has changed.
1,888 names catalogued from Wikipedia’s genus list on 11 October 2026. Inclusion does not establish that a name is a valid dinosaur genus. Historical or disputed names are marked for review. Names without a field note link go to the source overview.
- Pachycephalosaurusdinosaur · Cretaceous
- Pachyrhinosaurusdinosaur · Cretaceous
- Pachysauriscus ↗Historical / disputed: review source
- Pachysaurops ↗Historical / disputed: review source
- Pachysaurus ↗Historical / disputed: review source
- Pachyspondylus ↗Historical / disputed: review source
- Pachysuchus ↗Source index entry
- Padillasaurus ↗Source index entry
- Pakisaurus ↗Historical / disputed: review source
- Palaeoctonus ↗Historical / disputed: review source
- Palaeocursornis ↗Historical / disputed: review source
- Palaeolimnornis ↗Historical / disputed: review source
- Palaeopteryx ↗Historical / disputed: review source
- Palaeosauriscus ↗Historical / disputed: review source
- Palaeosaurus ↗Historical / disputed: review source
- Palaeoscincus ↗Source index entry
- Paleosaurus ↗Historical / disputed: review source
- Paludititan ↗Source index entry
- Paluxysaurus ↗Historical / disputed: review source
- Pampadromaeus ↗Source index entry
- Pamparaptor ↗Source index entry
- Panamericansaurus ↗Source index entry
- Pandoravenator ↗Source index entry
- Panguraptor ↗Source index entry
- Panoplosaurus ↗Source index entry
- Panphagia ↗Source index entry
- Pantydraco ↗Historical / disputed: review source
- Papiliovenator ↗Source index entry
- Paraiguanodon ↗Historical / disputed: review source
- Paralitherizinosaurus ↗Source index entry
- Paralititan ↗Source index entry
- Paranthodon ↗Source index entry
- Pararhabdodon ↗Source index entry
- Parasaurolophusdinosaur · Cretaceous
- Paraxenisaurus ↗Source index entry
- Pareiasaurus ↗Historical / disputed: review source
- Pareisactus ↗Source index entry
- Parksosaurus ↗Source index entry
- Paronychodon ↗Source index entry
- Parrosaurus ↗Source index entry
- Parvicursor ↗Source index entry
- Patagonykus ↗Source index entry
- Patagopelta ↗Source index entry
- Patagosaurus ↗Source index entry
- Patagotitandinosaur · Cretaceous
- Paulodon ↗Source index entry
- Pawpawsaurus ↗Source index entry
- Pectinodon ↗Source index entry
- Pedopenna ↗Source index entry
- Pegomastax ↗Source index entry
- Peishansaurus ↗Source index entry
- Pekinosaurus ↗Historical / disputed: review source
- Pelecanimimusdinosaur · Cretaceous
- Pellegrinisaurus ↗Source index entry
- Peloroplites ↗Source index entry
- Pelorosaurus ↗Source index entry
- Peltosaurus ↗Historical / disputed: review source
- Pendraig ↗Source index entry
- Penelopognathus ↗Source index entry
- Pentaceratopsdinosaur · Cretaceous
- Perijasaurus ↗Source index entry
- Petrobrasaurus ↗Source index entry
- Petrustitan ↗Source index entry
- Phaedrolosaurus ↗Source index entry
- Philovenator ↗Source index entry
- Phosphatotitan ↗Source index entry
- Phuwiangosaurus ↗Source index entry
- Phuwiangvenator ↗Source index entry
- Phyllodon ↗Source index entry
- Piatnitzkysaurusdinosaur · Jurassic
- Picrodon ↗Historical / disputed: review source
- Pilmatueia ↗Source index entry
- Pinacosaurusdinosaur · Cretaceous
- Pisanosaurus ↗Historical / disputed: review source
- Pitekunsaurus ↗Source index entry
- Piveteausaurus ↗Source index entry
- Planicoxa ↗Source index entry
- Plateosauravus ↗Source index entry
- Plateosaurusdinosaur · Triassic
- Platyceratops ↗Historical / disputed: review source
- Platypelta ↗Source index entry
- Platytholus ↗Source index entry
- Plesiohadros ↗Source index entry
- Plesiolophus ↗Source index entry
- Pleurocoelus ↗Historical / disputed: review source
- Pleuropeltus ↗Historical / disputed: review source
- Pneumatoarthrus ↗Historical / disputed: review source
- Pneumatoraptor ↗Source index entry
- Podischion ↗Historical / disputed: review source
- Podokesaurus ↗Source index entry
- Poekilopleuron ↗Source index entry
- Polacanthoides ↗Source index entry
- Polacanthusdinosaur · Cretaceous
- Polyodontosaurus ↗Source index entry
- Polyonax ↗Source index entry
- Ponerosteus ↗Historical / disputed: review source
- Poposaurus ↗Historical / disputed: review source
- Portellsaurus ↗Source index entry
- Postosuchus ↗Historical / disputed: review source
- Powellvenator ↗Source index entry
- Pradhania ↗Source index entry
- Prenocephaledinosaur · Cretaceous
- Prenoceratops ↗Source index entry
- Priconodon ↗Source index entry
- Priodontognathus ↗Source index entry
- Proa ↗Source index entry
- Probactrosaurus ↗Source index entry
- Probrachylophosaurus ↗Source index entry
- Proceratops ↗Historical / disputed: review source
- Proceratosaurusdinosaur · Jurassic
- Procerosaurus ↗Historical / disputed: review source
- Procheneosaurus ↗Historical / disputed: review source
- Procompsognathus ↗Source index entry
- Prodeinodon ↗Source index entry
- Proiguanodon ↗Historical / disputed: review source
- Propanoplosaurus ↗Source index entry
- Proplanicoxa ↗Historical / disputed: review source
- Prosaurolophus ↗Source index entry
- Protarchaeopteryx ↗Source index entry
- Protathlitis ↗Source index entry
- Protecovasaurus ↗Historical / disputed: review source
- Protiguanodon ↗Historical / disputed: review source
- Protoavis ↗Historical / disputed: review source
- Protoceratopsdinosaur · Cretaceous
- Protognathosaurus ↗Source index entry
- Protognathus ↗Historical / disputed: review source
- Protohadros ↗Source index entry
- Protorosaurus ↗Historical / disputed: review source
- Proyandusaurus ↗Historical / disputed: review source
- Pseudolagosuchus ↗Historical / disputed: review source
- Psittacosaurusdinosaur · Cretaceous
- Pteropelyx ↗Source index entry
- Pterospondylus ↗Source index entry
- Ptychotherates ↗Source index entry
- Puertasaurusdinosaur · Cretaceous
- Pukyongosaurus ↗Source index entry
- Pulanesaura ↗Source index entry
- Pulaosaurus ↗Source index entry
- Punatitan ↗Source index entry
- Pycnonemosaurus ↗Source index entry
- Pyroraptor ↗Source index entry