• Contact
• The Project
• Something About The North
• On my virtual bookshelf
• The Bookshelf
• The Filing Cabinet
• Bibliography and References

About The North

A Virtual Bookshelf and Filing Cabinet

Phanerozoic (Eon)

• Phanerozoic (Eon)

• After the Cambrian explosion, around 541 million years ago major animal phyla begin to appear in the fossil record..