In Depth First discovered in 1973, Arkansaurus was due to be formally named in 1977, tragically however the papers author Dr. James H. Quinn was killed in a fall while searching for fossils. Because the paper was not formally published, the name Arkansaurus was technically not valid. The name Arkansaurus however was not unknown and … Read more
Rahiolisaurus: Research Database Abelisauridae (Theropoda) · Late Cretaceous (~70-66 MYA) · Asia — India (Gujarat, Lameta Formation) Research Note: Rahiolisaurus was an abelisaurid theropod from the Late Cretaceous of India — one of the few known abelisaurids from the Indian subcontinent and an important taxon for understanding theropod diversity and biogeography in the latest … Read more
Augustynolophus: Research Database Hadrosauridae (Ornithischia) · Late Cretaceous (~66 MYA) · North America — USA ( Moreno Formation, California) Research Note: Augustynolophus morrisonensis was a saurolophine hadrosaurid from the Latest Cretaceous Moreno Formation of California — one of the few known dinosaurs from the West Coast of North America. Its name honours Mrs. Augustyn … Read more
In Depth Initially thought to represent a new specimen of Zephyrosaurus, the small partial skull of the holotype was soon realised to be a whole new genus of small ceratopsian dinosaur. Like most primitive ceratopsian dinosaurs, Aquilops was a fairly small dinosaur measuring just over half a meter in length. The name Aquilops means ‘eagle … Read more
In Depth For one hundred and forty years Amphicoelias was regarded by some to have been one of the largest dinosaurs to ever walk the earth. First named in 1878 by Edward Drinker Cope, and based upon some truly large fossils of vertebrae and partial limbs and pubis bones. Three species were named, A. altus, … Read more
Atacamatitan: Research Database Titanosauria (Sauropoda) · Late Cretaceous (~70 MYA) · South America — Chile (Cerro del Pueblo Formation) Research Note: Atacamatitan was a titanosaur from the Late Cretaceous of Chile — the first dinosaur named from Chile and an important taxon for understanding titanosaur evolution in South America. Research Finding Status Grade … Read more
In Depth The holotype remains of Asylosaurus were originally attributed to the genus Thecodontosaurus, but a review by Peter Galton saw these remains established as a new genus. The genus names means ‘unharmed/sanctuary lizard’ and this is a reference as to how this set of remains were shipped from England to the United States by … Read more
In Depth Atlasaurus was named after the Atlas Mountains of Morocco. These in turn were named after the Titan Atlas who in Greek Mythology was said to hold up the sky. The species name A. imelakei comes from the Arabic Imelake, the name of a giant. Atlasaurus was once treated as a fairly primitive sauropod … Read more
Aniksosaurus: Research Database Theropoda (Dinosauria) · Late Cretaceous (~95–90 MYA) · South America — Argentina (Cerro del Pueblo Formation) Research Note: Aniksosaurus was a theropod dinosaur from the Late Cretaceous Cerro del Pueblo Formation of Argentina. As an early diverging theropod, it provides important data on theropod diversity and evolution in the Cretaceous of … Read more
In Depth At the time of its description, Australotitan is thought to possibly represent the largest dinosaur known from the Australian continent. However, Australotitan has only been described from partial limb and hip bones, and while the femur of Australotitan suggests that this dinosaur was comparable to other titanosaurian dinosaurs such a Dreadnoughtus and Futalognkosaurus … Read more