Category: Periods

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Neogene

The Neogene began 23 million years ago, and it goes until now. It was or is the period when the Earth and the life on it have become that what they are today. Coral...

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Paleogene

The Paleogene began 66 million years ago, and it ended 23 million years ago. It was the period when the mammals started to conquer every ecosystem. The coral reefs got their modern look. Different...

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Cretaceous

The Cretaceous began 145 million years ago, and it ended 66 million years ago. It was the period when the sea level had its highest point. In the seas, tiny single-celled algae produced huge...

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Jurassic

The Jurassic began 201 million years ago, and it ended 145 million years ago. It was the period when the supercontinent Pangea broke off. Huge sponge and coral reefs were built in the seas....

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Triassic

The Triassic began 252 million years ago, and it ended 201 million years ago. It was the period when the first dinosaurs appeared. New calcareous algal and coral reefs were built. The clams got...

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Permian

The Permian began 298 million years ago, and it ended 252 million years ago. It was the period when all land masses were unified to the supercontinent Pangea. The brachiopods developed a huge diversity...

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Carboniferous

The Carboniferous began 358 million years ago, and it ended 298 million years ago. It was the period when large forests grew, and they caused the large coal deposits and a high oxygen level....

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Devonian

The Devonian began 419 million years ago, and it ended 358 million years ago. It was the period, which is called the age of fishes. The fishes developed a huge diversity which was dominated...

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Silurian

The Silurian began 443 million years ago, and it ended 419 million years ago. It was the period when life started to conquer the land seriously. Mosses and early spore plants built up the...

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Ordovician

If the Cambrian was characterized by Trilobites inventing skeletons, the Ordovician was when trilobite’s copyright expired… The Ordovician began 485 million years ago, and it ended 443 million years ago. It was the period...