Photo: Rebecca Gelernter, Queen Mary University of London
Top: First demonstration of sexual selection in dinosaurs identified in Protoceratops andrewsi. Pictured is a cast of a skeleton of Tyrannosaurs Rex in the Oxford University Museum of Natural History.
Right: First demonstration of sexual selection in dinosaurs identified. This is a life restoration of adult dinosaur Protoceratops andrewsi in the foreground engaging in speculative sexual display postures. Non-mature animals can be seen in the background.