The discovery of a 480-million-year-old sponge in China has revolutionized scientists’ understanding of early reef ecosystems ...

International scientists have uncovered the oldest known phosphatic stromatoporoid sponge, dating back approximately 480 ...

3 min read During the Ordovician period, part of the Paleozoic era, a rich variety of marine life flourished in the vast seas and the first primitive plants began to appear on land—before the ...

International scientists have uncovered the oldest known phosphatic stromatoporoid sponge, dating back approximately 480 million years to the Early ...

3 min read The Cambrian period, part of the Paleozoic era, produced the most intense burst of evolution ever known. The Cambrian Explosion saw an incredible diversity of life emerge, including ...

Geologic Time is a crucial concept to understanding the history of the earth—including the evolution of life. Many different representations ... The largest extinction events define a change in era.

visitors can follow fossil evidence tracing the evolution of life during the Cambrian period — the first geological period of the Paleozoic era — which lasted from 541 million to 485 million ...