rilobites first appear in the fossil record 521 million years ago. These ancient arthropods may look weird and alien to us today, but they were a very successful group of animals that flourished for 300 million years.
rilobites first appear in the fossil record 521 million years ago. These ancient arthropods may look weird and alien to us today, but they were a very successful group of animals that flourished for 300 million years.