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, ...

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 ...

The theory would explain the presence of an odd density of impact craters around the equator dating back to the Ordovician period. A ring could have also contributed to one of the coldest periods ...

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 ...

Like other Megacheirans, Lomankus is an example of an arthropod with an adaptable head and specialized appendages (a scorpion ...

The oldest echinoids come from the Late Ordovician Period and are approximately 450 million years old. The closest sister group to the echinoids are the holothurians and the two groups must have ...

According to a new study, published in the journal Earth and Planetary Science Letters, this ring may have existed during the ...

Until recently, scientists thought arthropods flourished during the Cambrian Period (538 million to 485 million years ago), which came before the period in which the specimen found by Parry's team ...

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 ...

When I get together with my girlfriends we talk about all kinds of things. When I started my period that's who I wanted to talk about it. They could answer a lot of questions that I had ...

Many people who menstruate wonder if it's safe—or possible—to delay a period. You might want to postpone your week of bleeding due to an important event, like a wedding, work presentation ...