490-Million-Year-Old Trilobites Could Solve Ancient Geography Puzzle
490-Million-Year-Old Trilobites Could Solve Ancient Geography Puzzle Ten newly discovered species of trilobites, hidden for 490 million years in a little-studied part of Thailand, could be the missing pieces in an intricate puzzle of ancient world geography. Trilobites are extinct sea creatures with half-moon-shaped heads that breathed through their legs. A 100-page monograph in Papers … Read more