Abstract The upper Stormberg Group (Elliot and Clarens formations) of the main Karoo
Basin is well-known for its fossil vertebrate fauna, comprising early branching members of …

The origin and evolutionary relationships of ornithischian dinosaurs are topics that have
undergone a series of substantial revisions. At present there are several competing …

Lesothosaurus diagnosticus from the upper Elliot Formation of South Africa and Lesotho (?
Hettangian–Sinemurian) is an important early representative of Ornithischia. In previous …

During their long evolutionary history, neornithischian dinosaurs diverged into several
clades with distinctive adaptations. However, the early evolution within Neornithischia and …

Stegosaurs are a minor but iconic clade of ornithischian dinosaurs, yet due to a poor fossil
record, their early evolution is poorly understood. Here, we describe a new stegosaur …

The systematic position of the unusual Late Jurassic dinosaur Chilesaurus diegosaurezi
remains an area of real uncertainty. Originally thought to be an unusual theropod …

The early evolutionary history of the armored dinosaurs (Thyreophora) is obscured by their
patchily distributed fossil record and by conflicting views on the relationships of Early …

ABSTRACT A new neornithischian dinosaur, Sanxiasaurus modaoxiensis gen. et sp. nov., is
described based on a partial postcranial skeleton from the Middle Jurassic Xintiangou …

Fragmentary caudal ends of the left and right mandible assigned to Lesothosaurus
diagnosticus, an early ornithischian, was recently discovered in the continental red bed …

Lesothosaurus diagnosticus is a small ornithischian dinosaur from the Lower Jurassic
Massospondylus Assemblage Zone of the upper Elliot Formation of the Karoo Basin of …