Rhoetosaurus: Profile of a Prehistoric Giant Rhoetosaurus Rhoetosaurus (REE-toh-SAWR-us; “Rhoetus’s lizard”) is a genus of sauropod dinosaur that lived during the Middle Jurassic period, approximately 170 to 160 million years ago, in what is now Queensland, Australia. The name refers to Rhoetus, one of the Giants from Greek mythology, highlighting the dinosaur’s large size. Rhoetosaurus […]
Riabininohadros Riabininohadros (Ree-ah-BEE-nee-noh-HAD-ross; “Riabinin’s hadrosaur”) is a genus of hadrosauroid dinosaur that lived during the Late Cretaceous period, specifically the late Maastrichtian stage, about 70 to 66 million years ago. Its fossil remains have been discovered in the Crimean Peninsula. The name Riabininohadros honors the Russian paleontologist Anatoly Nikolaevich Riabinin, who first described the species
Ricardoestesia Ricardoestesia (rih-KAR-doh-ess-TEE-zee-uh; “Richard Estes’ [tooth]”) is a genus of small theropod dinosaur known primarily from its distinctive teeth. It lived during the Late Cretaceous period, approximately 76 to 66 million years ago. Fossils of Ricardoestesia, mainly teeth, have been discovered in various locations across North America, with some potential finds in Europe and Asia.
Rinchenia Rinchenia (RIN-chen-EE-ah; “Named for paleontologist Rinchen Barsbold”) is a genus of oviraptorid theropod dinosaur that lived during the Late Cretaceous period, approximately 70 million years ago, in what is now Mongolia. Fossils of Rinchenia were discovered in the Nemegt Formation of the Gobi Desert. The dinosaur was first named as a species of Oviraptor,
Rinconsaurus: Profile of a Prehistoric Giant Rinconsaurus Rinconsaurus (RIN-kon-SAWR-us; “Rincón lizard”) is a genus of titanosaurian sauropod dinosaur that roamed South America during the Late Cretaceous period, approximately 80 million years ago. Its fossils were discovered in the Neuquén Province of Argentina, near the town of Rincón de los Sauces, which gives the dinosaur its
Riojasaurus: Profile of a Prehistoric Giant Riojasaurus Riojasaurus (Ree-OH-hah-SAWR-us; “Rioja lizard”) is a genus of sauropodomorph dinosaur that lived during the Late Triassic period, approximately 227 to 210 million years ago. Its fossils were discovered in the Los Colorados Formation of La Rioja Province in Argentina, which is how it got its name. Paleontologist José
Riojasuchus Riojasuchus (REE-oh-hah-SOO-kus; “La Rioja crocodile”) Riojasuchus is an extinct genus of ornithosuchid archosaur that lived during the Late Triassic period, approximately 227 to 208.5 million years ago. Its fossils have been discovered in the Los Colorados Formation in the La Rioja Province of Argentina. It is important to note that while Riojasuchus lived alongside
Riojavenatrix Riojavenatrix (ree-OH-hah-veh-NAY-triks; “Rioja huntress”) is a genus of spinosaurid theropod dinosaur that roamed what is now Spain during the Early Cretaceous period, approximately 129 to 125 million years ago. The name Riojavenatrix honors the La Rioja region of Spain where its fossils were discovered, combined with “venatrix,” Latin for huntress. This dinosaur was first
Riparovenator: Profile of a Prehistoric Giant Riparovenator Riparovenator (Rye-pah-roh-VEN-ah-tor; “Riverbank Hunter”) is a genus of spinosaurid theropod dinosaur that lived during the Early Cretaceous period, about 129 to 125 million years ago. Its fossils were discovered in the Wessex Formation on the Isle of Wight, in the United Kingdom. The name Riparovenator milnerae honors the
Rocasaurus: Profile of a Prehistoric Giant Rocasaurus Rocasaurus (RAW-kah-SAWR-us; “Roca lizard”) is a genus of titanosaurian sauropod dinosaur that lived during the Late Cretaceous period, approximately 75 to 70 million years ago, in what is now South America. The name refers to General Roca, a city in the RÃo Negro Province of Argentina, near where
