For 130 years, dinosaurs have been divided into two distinct clades—Ornithischia and Saurischia. Here we present a hypothesis for the phylogenetic relationships of the major dinosaurian groups that ...

A team of Chinese paleontologists discovered a new dinosaur species, Archaeocursor asiaticus, in southwestern China, offering fresh insights into the early evolution of ornithischian dinosaurs in Asia ...

AS EVERY school-aged aficionado of dinosaurs knows, those terrible reptiles are divided into two groups: the Saurischia and the Ornithischia—or, to people for whom that is all Greek, the lizard-hipped ...

Cat-sized Scottish fossil proposed as candidate for common dinosaur ancestor in controversial study that could overthrow a century of dinosaur classification The most radical shakeup of the dinosaur ...