to those long-deferred stirrings of the deep imprisoned titans which have divided earth history into periods and eras. The flight of time is measured by the weaving of composite rhythms— day and ...

Geologic Time is a crucial concept to understanding the history of the earth—including the evolution of life ... The geologic time scale is divided into eons, eras, periods, epochs, and ages. Our ...

The scale functions as a massive calendar, dividing the history of life into eras, periods, and epochs based on fossil evidence. In this feature, explore the history of life on Earth as we know it ...

Everyone knows that dinosaurs are extinct, and most people have some idea about how it might have occurred. But the exact ...

Scientists have made the case that Earth has entered a new epoch known ... Previously geologic eras lasted for millennia, and changes came due to "natural fluctuations in temperature on the ...

Learn about the time period that took ... of the Cenozoic era—dinosaurs, pterosaurs, and giant marine reptiles were conspicuously absent from the face of the Earth. Rodent-size (and perhaps ...

3 min read The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. Something—a bout of violent volcanic eruptions, climate change, or perhaps a fatal run ...

The Triassic Period was a time of great change. Bookended by extinctions, this era saw huge shifts in the diversity and dominance of life on Earth, ushering in the appearance of many well-known groups ...

Between 640 and 720 million years ago, the Earth was covered in ice ... have just found the world’s most complete record of ...