THE PREHISTORIC A–Z
Explore the letter R
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.
- Rachitrema ↗Historical / disputed: review source
- Rahiolisaurus ↗Source index entry
- Rahona ↗Historical / disputed: review source
- Rahonavis ↗Historical / disputed: review source
- Rajasaurus ↗Source index entry
- Rapator ↗Source index entry
- Rapetosaurusdinosaur · Cretaceous
- Raptorex ↗Historical / disputed: review source
- Ratchasimasaurus ↗Source index entry
- Rativates ↗Source index entry
- Rayososaurus ↗Source index entry
- Razanandrongobe ↗Historical / disputed: review source
- Rebbachisaurusdinosaur · Cretaceous
- Regaliceratops ↗Source index entry
- Regnosaurus ↗Source index entry
- Revueltosaurus ↗Historical / disputed: review source
- Rhabdodon ↗Source index entry
- Rhadinosaurus ↗Historical / disputed: review source
- Rhinorex ↗Historical / disputed: review source
- Rhodanosaurus ↗Historical / disputed: review source
- Rhoetosaurus ↗Source index entry
- Rhomaleopakhus ↗Source index entry
- Rhopalodon ↗Historical / disputed: review source
- Riabininohadros ↗Source index entry
- Richardoestesia ↗Source index entry
- Rileya ↗Historical / disputed: review source
- Rileyasuchus ↗Historical / disputed: review source
- Rinchenia ↗Source index entry
- Rinconsaurus ↗Source index entry
- Rioarribasaurus ↗Historical / disputed: review source
- Riodevasaurus ↗Historical / disputed: review source
- Riojasaurusdinosaur · Triassic
- Riojasuchus ↗Historical / disputed: review source
- Riojavenatrix ↗Source index entry
- Riparovenator ↗Source index entry
- Rocasaurus ↗Source index entry
- Roccosaurus ↗Historical / disputed: review source
- Ronaldoraptor ↗Historical / disputed: review source
- Rubeosaurus ↗Historical / disputed: review source
- Ruehleia ↗Source index entry
- Rugocaudia ↗Source index entry
- Rugopsdinosaur · Cretaceous
- Ruixinia ↗Source index entry
- Rukwatitan ↗Source index entry
- Rutellum ↗Historical / disputed: review source
- Ruyangosaurus ↗Source index entry