More than 514 million years ago, long before dinosaurs roamed the Earth, sponge-like creatures called archaeocyathids were already busy building some of the planet’s earliest reefs — just north of […]
University of Missouri-Columbia
Posted inFossils & Paleontology
500-million-year-old Fossil Represents Rare Discovery Of Ancient Animal In North America
Many scientists consider the “Cambrian explosion” — which occurred about 530-540 million years ago — as the first major appearance of many of the world’s animal groups in the fossil […]