Discusses arthropods, a diverse group of animals characterized ... of the most famous outfits in Grammys history Egypt discovers first royal tomb in over a century What Makes A Corvette A Stingray?

These terrestrial pioneers were arthropods, such as primitive centipedes and arachnids, the ancestors of spiders. The first true plants began to take root on land some 430 million years ago.

These familiar marine arthropods first arose about 545 million years ago in the early Cambrian and thrived throughout the world's oceans until they were wiped out in the Permian extinctions about ...

Conservation Biology, Vol. 7, No. 4 (Dec., 1993), pp. 796-808 (13 pages) Arthropods, the most diverse component of terrestrial ecosystems, occupy a tremendous variety of functional niches and ...