Trilobites can tell us how animals evolved

The trilobite, which became extinct millions of years ago, is commonly known as one of the first complex forms of life on earth.  Their fossils can be found in many parts of the world and are often collected for their interesting shapes and varieties. (There’s even a vacuum cleaner designed after this creature…) In fact there are actually 20,000 known varieties of … Read moreTrilobites can tell us how animals evolved