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Dinosaur Names that Start with “R”

Check out the alphabetical list of dinosaur names beginning with the letter “R”. We’ll look at dinosaur pictures and discuss what their names mean, as well as learn more about dinosaur facts.

Dinosaurs with names that begin with the letter “R”

Rahonavis

Rahonavis dinosaur

Rahonavis is a genus of bird-like theropods that lived in what is now Madagascar during the Late Cretaceous period.

The dinosaur’s name means “bird threat from the clouds” (from the Malagasy Rahon , to which the term bird – avis was added ). The genus’s original name was modified because it was already taken by a moth from the moth family. Dr. John H. Ostrom is honoured by the genre moniker.

Rajasaurus

Rajasaurus dinosaur

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Rajasaurus is a genus of gigantic Abelisaurus that existed in what is now India during the Late Cretaceous period, around 71-65 million years ago (Maastrichtian).

Its name means “princely lizard,” while the genre name derives from the valley of the Narmad River, where the bones were discovered.

Rapator

Rapator dinosaur

The Rapator is a strange theropod that lived in early Cretaceous Australia.

Rapator is derived from the Latin words rapto (“to plunder”) and the suffix ator, and it means “plunderer,” “plunderer.” The species name ornitholestoides means “similar to ornitholestoides.”

Rapetosaurus

Rapetosaurus dinosaur


Rapetosaurus is a small sauropod that lived in Madagascar around 70-66 million years ago during the Late Cretaceous period. Rapetosaurus krausei is the only species. It was a quadrupedal, herbivorous dinosaur that lived in herds like other sauropods. Rapetosaurus is the first titanosaur whose bones were discovered as an almost complete skeleton with a skull.

Rapetosaurus krausei translates as “Rapet and Krause lizards.” The name “Rapeto” comes from Malagasy tradition, and the Greek word sauros means “lizard.” This dinosaur’s species name honours David W. Krause, the expedition leader who discovered many of the remains in Madagascar.

Raptorex

Raptorex dinosaur
Raptorex has been characterised as a small but advanced early Cretaceous Tyrannosauroid from Asia, however it could be a juvenile from one of the group’s larger late Cretaceous members, such as Tarbosaurus.

Raptorex is a combination of the Greek words raptor (robber) and rex (king). The species name was given in honour of Roman Kriegstein, who made the characteristic specimen available to scientists.

Ratchasimasaurus

Ratchasimasaurus dinosaur

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Ratchasimasaurus was a non-hadrosaurid iguanodont that lived in Thailand during the early Cretaceous epoch.

Ratchasimasaurus is named after the city of Nakhon Ratchasima, where the holotype of this species was discovered. The genre name (suranareae) honours Thao Suranari, who protected Nakhon Ratchasim from a rebel army in the nineteenth century.

Rativates

Rativates dinosaur
Rativates was an ornithomimosaur that lived in what is now North America during the Late Cretaceous period. Initially, Rativates remains were thought to be Struthiomimus altus specimens. It was only in 2016 that it was given its own genus and species.

Rativates is derived from the Latin words ratis, which refers to the ratites (Ratitae), which are non-flying birds without a sternum crest, and vates, which means “clairvoyant.” It relates to the dinosaur’s resemblance to current ostriches, which was thought to “predict” their subsequent existence.

In turn, the genre name is derived from the Latin evadere, which means “to dodge” or “to slip away.” It relates to the fact that it was successfully discovered and named only 80 years after the discovery of the holotype, reflecting the claimed ability of ratiwates to elude predators at the time (McFeeters et al., 2016).

Rayososaurus

Rayososaurus dinosaur


Rayososaurus is an unknown genus of possibly medium-sized Rebbachisaurids that lived during the Early Cretaceous in what is now west-central Argentina. Rayososaurus generic and species names were derived from the location of the bones’ discovery—the Rayoso Formation and the city of Agrio del Medio.

Rebbachisaurus

Rebbachisaurus dinosaur
Rebbachisaurus was a diplodocoid that lived in northern Africa during the Late Cretaceous epoch. Rebbachisaurus was called after the Berber tribe (Ait) Rebbach, whose land the animal’s remains were discovered. They were discovered in Gara Sba, which gave rise to the genre name garasbae.

Regaliceratops

Regaliceratops dinosaur

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Regaliceratops peterhewsi is a fascinating Chasmosaurin species from the Late Cretaceous. The fossilised remains of Regaliceratops were discovered in today’s Canada (northwestern Alberta) and are dated to the “middle” Maastrichtian.

Regaliceratops is a combination of the terms Latin regalis (royal) and Greek ceratops (horned face). As a result, the entire name can be translated as “royal horned face.” Peter Hews, the discoverer of the holotype, is honoured by the genre epithet peterhewsi.

Regnosaurus

Regnosaurus dinosaur
Regnosaurus is a dubious early Cretaceous thyrophore described from a fragment of a tooth bone (BMNH 2422) and maybe from a pubic bone and an osteoderm. The remains were discovered in Cuckfield, Sussex.

This dinosaur’s name means “Sussex Lizard” – the location where its fossilized bones were discovered – and relates to the Celtic tribe of RegNow.

Rhabdodon

Rhabdodon dinosaur


Rhabdodon was a prehistoric iguanodont that lived in Europe during the end of the dinosaur era. Rhabdodon was short and stocky. Rhabdodon inarticulate remnants are rather widespread in various European areas. Rhabdodon means “fluted teeth” in Greek.

Read also: A-Z list of Dinosaur Names and Pictures

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Written by James

James has always been intrigued by dinosaurs, the universe, technology, and animals. With a Bachelor of Computer Science and years of writing expertise, he joined World Amazing Facts in 2021 as a staff writer.

Our team at World Amazing Facts is committed to verifying the accuracy of our content. It's possible that we'll get something wrong, or that our knowledge may become obsolete. Please let us know if you see any errors in the information provided.

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