A Brief History of Dinosaurs: From Rise to Extinction

By Thalia Shepherd - Jan 7, 2025

This article appeared in pensandpatron.com and has been published here with permission.

Of all the beasts that have roamed the earth, none are perhaps more successful than the dinosaurs. These fearsome, gigantic reptiles have captured the imaginations of millions, and part of their appeal lies in the mysteries surrounding them. Despite their popularity, however, many people don’t know the history of dinosaurs, where they came from, and which among them were the kings of the land. In this post, we’re hoping to cast some light on these questions while also providing examples of the world’s largest creatures!

Where Did Dinosaurs Come From?

Dinosaurs are the world’s most successful group of animals. They ruled the earth for roughly 250 million years, with their reign finally ending some 66 million years ago. That length of time is nearly impossible for us to grasp; suffice it to say, dinosaurs were around for a very, very long time.

Where Did Dinosaurs Come From?

Where they come from, however, is something of a mystery. While it is possible to track the evolution of certain species of dinosaurs, there is no definitive answer as to which dinosaur was the first to ever roam the earth.

Where Did the Dinosaurs Live?

Dinosaurs lived in various parts of the world, and specimens have been discovered in the USA, Europe, Asia, Australia, South Africa, and many other countries. However, during the Triassic Period — the earliest chapter of dinosaur history — dinosaurs roamed the supercontinent Pangaea, which was once the largest landmass on Earth.

Where Did the Dinosaurs Live?

Over the years, however, as the Triassic Period progressed into the Jurassic Period — and then into the Cretaceous Period — this landmass began to sunder and split. Eventually, by the time the dinosaurs went extinct, these separate landmasses became the continents we know today, albeit with a few differences.

When Did the Dinosaurs Live?

Despite what you may believe, not all dinosaurs existed at the same time as others. Remember, these beasts roamed the earth for 250 million years! It’s impossible for them to have all lived at the same time and place. There are three periods in which the dinosaurs ruled the earth: the Triassic Period, the Jurassic Period, and the Cretaceous Period.

When Did the Dinosaurs Live?

Tyrannosaurus Rex lived during the Cretaceous Period; Stegosaurus lived during the Jurassic Period. These two popular yet distinct species of dinosaur were separated by about 66 million years!

Theropods

Dinosaurs can be categorized into three distinct groups: theropods, sauropods, and ornithopods. Theropods were bipedal predators and meat-eaters, physically characterized by large heads, small forearms, and — of course — a fearsome appearance.

Theropods

These are most likely the dinosaurs that you are most familiar with; popular examples include both Tyrannosaurus Rex and the Velociraptor.