Extinct Hallucigenia

Here are the superstars of the story of life, from the super-weird to the super-ferocious. Usually a species has 10 million years or so of evolving, eating, chasing, playing, maybe doing homework, or even going to the moon before it goes extinct.
Hallucigenia was a super-weird, spiky, armoured worm that lived 450 million years ago. Scientists were, at first, unsure of which way round it went, and which way up. But here you will discover all Hallucigenia's secrets: where it lived, what it ate, why it was so weird and why it is so important in the story of life.
Collect all eight books about animals we have lost in mass extinctions caused by asteroids or mega-volcanoes, clashing continents and climate change.
Also includes:
* Past brought to full-colour life by palaeoartist Gabriel Ugueto
* Ask an Expert contributions from leading scientists
* Glossary and pronunciation guide