Mesozoic

Edmontosaurus

Edmontosaurus was a type of hadrosaur, commonly called a “duck-billed dinosaur” which lived in western North America at the end of the Cretaceous Period, dating from approximately 75-65.5 MYA – that’s right, another Hell Creek dinosaur! Currently, there are two… Read More ›

Dromaeosaurus

Dromaeosaurus albertensis was a six-foot carnivore which lived in western North America during the Late Cretaceous Period. It is a distant cousin of Deinonychus and Velociraptor. Only one fragmentary skeleton was found in Alberta, Canada, although its teeth have been… Read More ›

Pachycephalosaurus

Pachycephalosaurus wyomingensis was the last and largest of the so-called “dome-headed” dinosaurs. It measured fifteen feet long and lived 68-65.5 million years ago, right at the very end of the age of dinosaurs. Its fossils have been found in Wyoming… Read More ›

Albertosaurus

Albertosaurus, named after the province of Alberta, Canada, is one of the most well-known theropod dinosaurs. It is a distant relative of T. rex which lived in western North America approximately 75 million years ago (MYA). It was also one… Read More ›

Archaeopteryx

In a previous post, I talked a little bit about the “raptor” dinosaurs and how they had feathers. Here is a drawing of Archaeopteryx, long reputed to be the earliest-known bird. It lived during the late Jurassic Period in what… Read More ›