The Huge Extinctions We Are Just Now Discovering. Season 6 Episode 8 | 8m 58s Video has Closed Captions | CC. Graptolites show us how unpredictable the Silurian period really could be.

Nature - Ancient fish from the Silurian period provide evolutionary insights. Scarce evidence indicates that key evolutionary steps for jawed vertebrates occurred during or before the Silurian ...

A decade ago, researchers set out to systematically survey the 425-million-year-old rocks of the late Silurian period in China, said Gai Zhikun, a paleontologist at the Chinese Academy of Sciences ...

Extended periods of marine anoxia — a lack of oxygen in the water — characterized the Late Devonian Mass Extinction. The two most pronounced periods are known as the Kellwasser event, which occurred ...

By the late Silurian period, more diverse and larger jawed fish had evolved and began to spread around the world, paving the way for some fish to eventually go on land and evolve into other animals.

Ischnacanthids have been identified from many sites globally that date from the Late Silurian Period (about 420 million years ago) to the Late Devonian Period (380 - 350 million years ago). Fossil ...

A decade ago, researchers set out to systematically survey the 425-million-year-old rocks of the late Silurian period in China, said Gai Zhikun, a paleontologist at the Chinese Academy of Sciences ...

A newly discovered fossil “treasure hoard” dating back some 436 million years to the early Silurian period reveals, for the first time, the complete body shape and form of some of the first ...

The discovery suggests that insects almost certainly evolved in the Silurian Period, some 438-408 million years ago. "In the late Silurian is where we have the first evidence for terrestrial ...