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This book dives deep into the past when life first began. From the plant-like goo that brought oxygen to Earth to the lumbering gorgonopsids from which all mammals evolved, the book explores over 3500 million years of strange creatures and how humans have learned about them.

Readers will marvel at the scary-looking creatures from the pre-Dinosaur era: spiders the size of m... More

This book dives deep into the past when life first began. From the plant-like goo that brought oxygen to Earth to the lumbering gorgonopsids from which all mammals evolved, the book explores over 3500 million years of strange creatures and how humans have learned about them.

Readers will marvel at the scary-looking creatures from the pre-Dinosaur era: spiders the size of manhole covers, giant sea-scorpions as big as bicycles.

About the It's True! series

Gross! Creepy! Amazing! Kids will love it.

This non-fiction series for older readers features wacky writing, funny cartoons, and remarkable photos that make each book as delightfully entertaining as it is informative. It's True!

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