Fossils Record Reveals Ancient Migrations, Trilobite Mass Matings

ScienceDaily — Few specimens inspire greater thrills among fossil collectors than a complete trilobite. These ancient arthropods — relatives of lobsters, spiders and insects — went extinct more than 250 million years ago, but are sometimes found in beautifully preserved condition. In rare instances, an entire population of trilobites is found fossilized together. Carlton E. Brett finds evidence for ancient environment and behavior in these mass graves. Read article