Stegosaurus
c. 155-150 million years ago · Event
The unmistakable one: a bus-sized plant-eater carrying a double row of bony plates down its back and a four-spiked tail — the 'thagomizer' — that Jurassic predators learned to respect. Its brain was the size of a plum, its plates possibly for show or temperature control; no dinosaur silhouette is more recognisable, and none lived further in time from T. rex.
On these timelines: The Age of Dinosaurs, Master
More from The Age of Dinosaurs
- Cretaceous–Paleogene extinction (66000000 BCE)
- Tyrannosaurus rex (68000000 BCE)
- Mesozoic Era (252000000 BCE)
- Paleozoic Era (541000000 BCE)
- Jurassic Period (201000000 BCE)
- Cretaceous Period (145000000 BCE)
- Triassic Period (252000000 BCE)
- Archaeopteryx and the first birds (150000000 BCE)
Around 155000000 BCE
- First flowering plants (140000000 BCE)
- Diplodocus (154000000 BCE)
- Brachiosaurus (154000000 BCE)
- Brontosaurus (152000000 BCE)
- Allosaurus (155000000 BCE)