A theropod dinosaur is described for the first time from the Upper Jurassic of Mongolia. It is represented by a partial skull from the upper Jurassic Dariv Suite in Dariv, Ikhes Nuur Basin, Gobi-Altai Aimag, western Mongolia, situated relatively close to the Xinjiang Uygur Autonomous Province in the western part of China. From the same beds of the locality, sauropod bones were also abundantly found. Those fossil di ... Read more »

The lectotype of the Middle Jurassic theropod dinosaur Megalosaurus bucklandii, a right dentary, can be diagnosed on the basis of two unique characters: a longitudinal groove on the ventral part of the lateral surface of the dentary and a slit-like anterior Meckelian foramen. This taxon, the first dinosaur to be scientifically described, is therefore valid. Currently, however, no further material can be referred to ... Read more »

Abstract: A portion of a cranium from the Kimmeridgian La Casita Formation at Zaragoza, Nuevo León, north-eastern Mexico, is described and referred to the thalattosuchian genus Dakosaurus. The specimen is too incomplete for further determination or detailed comparison with forms known from Europe and South America. It represents the second occurrence in the Late Jurassic Mexican Gulf of the genus, which had been co ... Read more »

A new ichthyosaur, Platypterygius ochevi sp. nov., from the Albian–Cenomanian of the Voronezh Region is described based on a partial forefin. It differs from congeners in the very large facet for the lageniformis on the humerus.
INTRODUCTION
Remains of the globally distributed ichthyosaur genus Platypterygius occur in the Cretaceous of Russia and adjacent countries. They are usually confined to condensation h ... Read more »