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 ...

Graptoloidea - Graptolites were minute individual tube-shaped animals ... In life, the rhabadosome was suspended from a "float" by a slender thread called a nema. Late Ordovician Period - The ...

like graptolites, that no longer exist. The extinction event, known as the end-Ordovician, was one of the five biggest of the past half billion years. It coincided with extreme changes in climate ...

That was the case for Luke Parry, a paleobiology professor at Oxford University, who this week announced he'd unearthed a ...

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 ...

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 ...

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 ...

"Healthcare providers do not advise or recommend that a patient try to bring on a period early under any circumstances. This article reviewed is for informational purposes only," says Peter Weiss ...

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 ...