Prehistoric time line, geologic time scale ... The productive Paleozoic era gave rise to hard-shelled organisms, vertebrates, amphibians, and reptiles. Dinosaurs ruled the Earth in the mighty ...

Humans have made an indelible mark on the planet. Since the mid-20th century, we've accelerated the digging of mines, ...

A spate of notable quakes have rattled Southern California in recent months — a reminder that the last three decades of ...

What era is formation of Earth's atmosphere? In the six billion year period ago Earth cooled, and gases ejected from volcanoes created an atmosphere. The atmosphere at that time, however, contained ...

Nothing would have been growing higher than your knees in the early Triassic,” Wignall said, referring to the geological era that followed the extinction event when the ecosystem began to recover.

This not only marked the end of the Permian period and the start of the Triassic, it was such a serious catastrophe that it is used as the marker of the end of a geologic era, the palaeozoic era.

University of Maryland researchers have found intriguing new evidence of ancient seafloor deep beneath the Earth's surface.

Climate change and urbanization are threatening ancient sites around the world. As archaeologists fight back, satellites are ...

What took so long for humans to appear on Earth? The Earth is 4.6 billion years old, and life began about 4 billion years ago ...

Geological eras and periods with relative times (Myr ago) are indicated on the left. Mammal lineages are in red; diapsid reptiles, shown as archosaurs (birds, crocodilians and dinosaurs), are in ...

Recent studies off the shore of West Antarctica have reinforced the idea that there have been phases of rapid melting in past geologic eras of rapid warming. Detailed mapping of the seafloor shows ...

The report spread by certain media outlets including 'Egypt Independent' misreporting that there may be an earthquake around ...