Stegosaurus existed from about 155 to 150 million years ago. That was during the Kimmeridgian and Tithonian stages of the Jurassic period. Stegosaurus fossils were discovered in Morrison, Colorado in 1877 by Othniel Charles Marsh.
The Stegosaurus dinosaur existed for about 150 million years threw the Jurassic era, Into the early Cretoceous era
Stegosaurus existed from about 155 to 150 million years ago. That was during the Kimmeridgian and Tithonian stages of the Jurassic period.
220 million years ago
65 million years ago
millions of years ago
5 million years ago
Stegosaurus died out around 150 million years ago, and the last of its relatives, the Stegosauria, died out around 100 million years ago. Nobody knows exactly why they went extinct.
Stegosaurus existed for 5 million years, between 155 and 150 million years ago. The group of related dinosaurs, Stegosauria, however, lasted from 176 to 100 million years ago.
Stegosaurus fossils date to between 155 and 150 million years ago. Presumably they died out around 150 million years ago, during the Tithonian stage of the Jurassic period.
The earliest fossils belonging to the genus Stegosaurus are about 155 million years old. However, relatives of Stegosaurus, i.e., stegosaurs, first evolved at least ten million years ago. The earliest known stegosaur is Lexovisaurus, which lived in what is now England around 164.7 million years ago.
Stegosaurus existed from about 155 to 150 million years ago. That was during the Kimmeridgian and Tithonian stages of the Jurassic period.
Stegosaurus existed from about 155 to 150 million years ago. That was during the Kimmeridgian and Tithonian stages of the Jurassic period.
Stegosaurus fossils date from about 155 to 150 million years ago. That was during the Kimmeridgian and Tithonian stages of the Jurassic period. Brachiosaurus fossils date to between 154 and 153 million years ago.
Albertosaurus lived between 71 and 68 million years ago. Stegosaurus lived between 155 and 150 million years ago, meaning that they died out 79 million years before Albertosaurus existed. If they had lived at the same time and in the same place, though, Albertosaurus would have hunted Stegosaurus.
Stegosaurus existed from about 155 to 150 million years ago. That was during the Kimmeridgian and Tithonian stages of the Jurassic period.