Dinosaurs

Hello. You might know us as dinosaurs. Our story begins a very long time ago, during a time you call the Triassic Period, around 230 million years ago. In those days, the world was one giant piece of land that scientists now call Pangaea. We weren't the colossal giants you often see in pictures and museums. We started small, nimble, and quick on our feet. Our world was a vast landscape of ferns and tall conifer trees, a place very different from yours. This was the dawn of our time, the very beginning of a reign that would last for an astonishing length of time, far longer than humans have existed on this planet.

As the world turned, our age of giants began. This was the Jurassic Period, which started around 201 million years ago. The world around us was changing dramatically. The supercontinent of Pangaea began to break apart, creating smaller continents and new oceans. The climate grew warmer and wetter, which allowed lush, dense forests to spread across the land. This environment was our buffet, and it was our time to grow. Some of us, the sauropods, evolved incredibly long necks that allowed us to reach the leaves at the tops of the tallest trees. Others, like the fearsome Allosaurus, became perfectly adapted hunters, thriving in this vibrant and competitive ecosystem. We diversified and spread, filling every corner of the land, from the mightiest plant-eaters to the most clever predators.

Our final chapter on Earth unfolded during the Cretaceous Period, starting about 145 million years ago. By this time, our family had become incredibly diverse, with countless shapes and sizes. This is the era when you would have met some of our most famous relatives, like the mighty Tyrannosaurus rex, the powerful three-horned Triceratops, and the heavily armored Ankylosaurus. The world continued to change, and something new appeared: flowering plants. These plants transformed the landscape and our diets. Many of us had developed complex behaviors; we lived in large herds for protection, carefully built nests to raise our young, and communicated in ways we were just beginning to perfect. We were a thriving and successful group of animals, ruling a dynamic and ever-changing planet.

For more than 150 million years, we were the undisputed masters of the Earth. We adapted, we evolved, and we prospered. But then, about 66 million years ago, an event occurred that changed everything forever. A colossal rock from space, an asteroid, crashed into the planet with unimaginable force. The impact threw a thick cloud of dust, rock, and debris high into the atmosphere, which spread around the globe and blocked out the sun. The world grew dark and cold. Without sunlight, the plants we and other animals relied on for food began to wither and die. The food chains that had supported our existence for millions of years completely collapsed. It was not a quick or simple end for us, but the world we had known and thrived in for so long was gone.

We lived in the Mesozoic Era. Though our time as the dominant animals on Earth ended, our story was preserved in stone. Our bones settled into the earth and, over millions of years, became the fossils that tell our history. It was not until the 1800s that humans began to find these fossils and piece together the story of our lives. In 1842, a scientist named Sir Richard Owen officially gave us our name: Dinosauria, which means ‘terrible lizards.’ Today, you study our fossilized remains to understand Earth’s ancient past, the process of evolution, and how life can change in response to catastrophic events. In a way, we are still here. One small group of us survived the great catastrophe and evolved into the birds you see flying in your sky every day. Our legacy is a powerful reminder of life’s incredible and unpredictable journey.