Dinosaur Timline

Main

Lizard-Hipped Dinosaur

First Dinosaurs Appear

245,000,000 BC

Small Meat-Eating and Avian Dinosaurs

225,000,000 BC - 05/17/2014

First Plant-Eating Dinosaurs Appear

225,000,000 BC

Large Meat-Eating Dinosaurs

200,000,000 BC - 65,000,000 BC

Giant Dinosaurs

200,000,000 BC - 65,000,000 BC

First Avian Dinosaurs

150,000,000 BC

Bird-Hipped Dinosaur

First Bird-Hipped Dinosaur

220,000,000 BC

Plant-Eating Dinosaurs

220,000,000 BC - 65,000,000 BC

Plated Dinosaurs

195,000,000 BC - 65,000,000 BC

Armored Dinosaurs

175,000,000 BC - 65,000,000 BC

Horned Dinosaurs

130,000,000 BC - 65,000,000 BC

Other Creature of the Mesozoic Era

Permian Extinction Event

255,000,000 BC - 251,000,000 BC

First Large Marine Reptiles Appear

250,000,000 BC

First Flying Reptiles Appear

248,000,000 BC

Ichthyosaurs (Marine Reptiles)

248,000,000 BC - 90,000,000 BC

Placodonts (Turtle-Like Marine Reptiles)

248,000,000 BC - 210,000,000 BC

Nothosaurs (Marine Reptiles)

248,000,000 BC - 200,000,000 BC

First Mammals

231,000,000 BC

Triassic Mass Extinction Event

200,000,000 BC

Pliosaurs (Marine Reptiles)

195,000,000 BC - 65,000,000 BC

Plesiosaurs (Marine Reptiles)

165,000,000 BC - 65,000,000 BC

Mosasaurs (Aquatic Lizards)

100,000,000 BC - 65,000,000 BC

KT Event

65,000,000 BC

Dinosaur Discoveries

First Dinosaur Bones found in the US

1789

First Dinosaur Identified

1824

The Bone Wars

1875 - 1895

First Life

3,800,000,000