When Trilobites crawled the sea, arthropods were weird and fish came into swimming

Featuring cartoons and Common Core alignment activities for teachers and kids, this book is a wonderful addition to any science class, library, or home bookshelf.

Enjoy a humorous stroll through 500 million years of life on Earth, from when trilobites, oddball invertebrates, and jawless fish appeared to plants and animals first crawled onto land all the way to the dawn of dinosaurs. Along the way you will encounter fearsome fish, giant insects, bizarre invertebrates, towering trees, bizarre sea monsters and much more, served up with great illustrations and plenty of humor.