HICH Quiz - Be familiar to dinosaurs

Identify "Archaeopteryx" measuring no bigger than a large chicken and thought to have been capable of flight, if only in short bursts.

Identify "Therizinosaurus" which measured upto a yard long, despite the ferocious look of its characteristic outsized claws and it was a herbivore.

Identify "Pachycephalosaurus" having thick mass of solid bone atop its head and its skull was about 20 times thicker than most other dinosaurs skull.