Learn more about the time period that took place 488 to 443 million years ago. 3 min read During the Ordovician period, part of the Paleozoic era, a rich variety of marine life flourished in the ...

ISTOCK / GETTY IMAGES PLUS The researchers' idea that Earth once had rings comes from reconstructions of Earth's plate tectonics from the Ordovician period—which ran between 485.4 million years ...

The Earth: a ringed planet, much like Saturn, surrounded by a hula hoop of asteroids. The summit of Mount Everest: a tropical ...

The earliest fossil evidence for sharks or their ancestors are a few scales dating to 450 million years ago, during the Late Ordovician Period. Emma Bernard, a curator of fossil fish at the Museum, ...

Amateurs, too, can look at local rocks to learn about what life was like in the Ordovician Period, 505 to 438 million years ago. Some of our area's unique geological features and the processes that ...

But first there was a period of biological regrouping following the disastrous climax to the Ordovician. The recovery soon got under way in the oceans as climbing temperatures and rising sea ...

Your journey will begin in an immersive timeline canyon of ancient rocks ... Starting at the beginning of the Cambrian Period around 540 million years ago, it then moves through the Ordovician, ...

with a steep rise occurring during the Ordovician period. Back then, the world would have looked much different than it does today. Sparse patches of green slime or moss-like species may have spread ...

Historical timeline of the development of modern weapons ... In the second half of the 18th century, musket design branched out. This period produced a number of single-purpose firearms.

The fossils that these layers contain are world-famous for the details that they record about life on Earth during the Late Ordovician Period. Besides preserving pieces of Earth's history, limestone ...