While life began in the Archean oceans, it was during the 2000 million-year Proterozoic Eon that cell-life made the transition to eukaryotic cells with nuclei that could reproduce and share genetic information. There was a near-catastrophic event that might have brought the end to it all...and the stories of these events are found in this little booklet! This is an Easy-reader, suggested for children ages 6 and above.

You know this period from the movies that bear its name, but you won’t arrive at the time when the dinosaurs ruled until the next period. Monstrous creatures swam in the Jurassic seas. This is an Easy-reader, suggested for children ages 6 and above.

As time marches through the Paleozoic, the creatures continue to evolve in the seas. The thin continental plates move around on the surface and create new shapes. This book tells the story of a long, prolific period of life in the seas. This is an Easy-reader, suggested for children ages 6 and above.

Welcome to the world of nearly everyone's favorite fossil! In this little booklet, you'll learn about how this ancient creature, the original "roly-poly bug," got its name and many other facts about where it lived and where you can find its fossil today. This is an Easy-reader, suggested for children ages 6 and above.

The history of the formation of the Universe, our Solar System, the Earth and all the eras that followed: Hadean, Archean, Proterozic, Paleozoic, Mesozoic, and Cenozoic. This is an Easy-reader, suggested for children ages 6 and above.

The formation of solid landforms, an atmosphere, and oceans of water at the end of the Hadean started a 1500 million-year progression that led to the first sparks of life. The beginning of cell life that transformed the atmosphere from poisonous gases to oxygen-rich, life sustaining air is the story of the great work of the Archean Eon! This is an Easy-reader, suggested for children ages 6 and above.

At last: the time when dinosaurs were the dominant creatures on Earth! These giants ruled the life on the planet, but their huge size was a real disadvantage when a giant meteor struck the planet, setting it on fire and exhausting the food supply. You’’ll learn about another tiny creature who will soon flourish. This is an Easy-reader, suggested for children ages 6 and above.

At the beginning of the Cenozoic Era we see new geographic formations that encourage the rise of a new type of animal: the horses, camels, and bison of the grasslands. The seas, still filled with life, support more giant creatures and the small sea-life that supported their monstrous appetites! This is an Easy-reader, suggested for children ages 6 and above.

The first period of the Mesozoic Era saw vast deserts and the rise of reptiles. You’ll be challenged to classify creatures that don’t easily fit into our modern systems as we march into the Jurassic. This is an Easy-reader, suggested for children ages 6 and above.

This common ancient fossil has real staying power: brachiopods can be found in deep modern seas. In this booklet, you'll learn how the clam-like brachiopods are a distinct species with unusual markings and shell shapes. This is an Easy-reader, suggested for children ages 6 and above.

What we think of as modern-life arrived as the Earth healed from the catastrophe that nearly ended it all. The Cenozoic Era brought new continents, new biomes, and new creatures that thrived in the diversity of climates. This is an Easy-reader, suggested for children ages 6 and above.

Mammals rule the land of the Neogene with more species and fierce hunters like the saber-toothed tiger and the Mastodon. You’ll read about a new creature in the forests of modern-day Africa whose numbers were increasing. This is an Easy-reader, suggested for children ages 6 and above.