Silurian - Wikipedia
The Silurian is the third and shortest period of the Paleozoic Era, and the third of twelve periods of the Phanerozoic Eon. As with other geologic periods, the rock beds that define the period's start and end are well identified, but the exact dates are uncertain by a few million years.
Silurian Period | Definition, Timeline, Map, Events, Fossils, Animals ...
Silurian Period, in geologic time, the third period of the Paleozoic Era. It began 443.8 million years ago and ended 419.2 million years ago, extending from the close of the Ordovician Period to the beginning of the Devonian Period.
Silurian Period Facts: Climate, Animals & Plants - Live Science
2014年2月20日 · The Silurian Period occurred from 443 million to 416 million years ago. It was a time of great environmental changes on Earth and saw the first evidence of life on land.
Silurian Period - Natural History Museum
2012年8月10日 · The Silurian is the first period with fossils of extensive non-microscopic life on land. Land fauna included spider-like and millipede-like predators, in addition to herbivorous (live plant) and/or detritus feeders.
The Silurian Period - University of California Museum of …
The Silurian (443.7 to 416.0 million years ago)* was a time when the Earth underwent considerable changes that had important repercussions for the environment and life within it. One result of these changes was the melting of large glacial formations.
Silurian Period Information and Facts | National Geographic
Learn about Earth's Silurian period from 443 to 416 million years ago.
Silurian Period—443.8 to 419.2 MYA - U.S. National Park Service
2023年4月28日 · Possibly the most remarkable biological event during the Silurian was the evolution and diversification of fish. Not only does this time period mark the wide and rapid spread of jawless fish, but also the appearances of both the first known freshwater fish and the first fish with jaws. Learn more about events in the Silurian Period
Silurian Period summary | Britannica
Silurian Period, Interval of geologic time, 443.4–419.2 million years ago, the third period of the Paleozoic Era. The Silurian follows the Ordovician Period and precedes the Devonian. It marks the first appearance of land plants and jawed fishes.
Silurian Period - Geology, Fossils, Climate | Britannica
Silurian Period - Geology, Fossils, Climate: Silurian formations widely scattered around the world display a wealth of natural beauty. Niagara Falls and the 11-km (7-mile) Niagara Gorge on the Canadian-U.S. border are products of erosion that continue to be sculpted by rushing waters undercutting the soft shale beneath a ledge of more-resistant ...
The Silurian Period - Paleontology World
The Silurian (443.7 to 416.0 million years ago)* was a time when the Earth underwent considerable changes that had important repercussions for the environment and life within it. One result of these changes was the melting of large glacial formations.