The Dino Directory
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Dino Timeline
The first dinosaurs appeared around 225 million years ago (mya) in a time known as the Mesozoic Era. Scientists divide this era into 3 periods: the Triassic, Jurassic and Cretaceous.
Select a section of the timeline below to see dinosaurs that lived then.
151 Late Cretaceous dinosaurs
| NAME (GENUS) | Years (million years ago) |  |
|---|---|---|
|
||
| Abelisaurus | 74 - 70 mya | |
| Achelousaurus | 83 - 70 mya | |
| Achillobator | 99 - 84 mya | |
| Aegyptosaurus | 98 - 93 mya | |
| Alamosaurus | 70 - 65 mya | |
| Albertaceratops | 80 - 75 mya | |
| Albertosaurus | 76 - 74 mya | |
| Alectrosaurus | 90 - 70 mya | |
| Alioramus | 71 - 65 mya | |
| Alvarezsaurus | 89 - 85 mya | |
| Ampelosaurus | 71 - 65 mya | |
| Anatotitan | 70 - 65 mya | |
| Anchiceratops | 74 - 70 mya | |
| Ankylosaurus | 74 - 67 mya | |
| Anserimimus | 84 - 65 mya | |
| Antarctopelta | 99 - 94 mya | |
| Antarctosaurus | 84 - 65 mya | |
| Aralosaurus | 94 - 84 mya | |
| Archaeornithomimus | 95 - 70 mya | |
| Argentinosaurus | 90 - ? mya | |
| Arrhinoceratops | 72 - 67 mya | |
| Aucasaurus | 84 - 71 mya | |
| Avaceratops | 80 - 75 mya | |
| Avimimus | 80 - 75 mya | |
| Bactrosaurus | 84 - 71 mya |