Silurian Period | Definition, Timeline, Map, Events, Fossils, Animals ...
WEBSilurian 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 - Natural History Museum
WEBAug 10, 2012 · 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.
Category:Silurian animals - Wikipedia
WEBSilurian animals. Wikimedia Commons has media related to Silurian Animalia. Paleozoic animals of the Silurian Period.
Silurian Period Facts: Climate, Animals & Plants - Live Science
WEBFeb 20, 2014 · The first known air-breathing animals were arthropods. Millipedes, centipedes and the earliest arachnids first appear in the Silurian.
Silurian Period Information and Facts | National Geographic
WEBThe Paleozoic era's Silurian period saw animals and plants finally emerge on land. But first there was a period of biological regrouping following the disastrous climax to the Ordovician.
Prehistoric Life During the Silurian Period - ThoughtCo
WEBMar 15, 2019 · The big news for vertebrate animals during the Silurian period was the evolution of jawed fish like Birkenia and Andreolepis, which represented a major improvement over their predecessors of the Ordovician period (such as Astraspis and Arandaspis). The evolution of jaws, and their accompanying teeth, allowed the …
Silurian - Wikipedia
WEBThe Silurian (/ sɪˈljʊəri.ən, saɪ -/ sih-LURE-ee-ən, sy-) [8][9][10] is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at 443.8 million years ago (Mya), to the beginning of the Devonian Period, 419.2 Mya. [11] The Silurian is the shortest period of the Paleozoic Era.
The Silurian Period - University of California Museum of …
WEBGraptolites are a group of extinct colonial, aquatic animals that put in their first appearance in the Cambrian Period and persisted into the early Carboniferous. The beginning of the Silurian (and the Llandovery) is marked by the appearance of Parakidograptus acuminatus, a species of graptolite.
Silurian Period - Marine Life, Fossils, Reefs | Britannica
WEBSilurian Period - Marine Life, Fossils, Reefs: Marine benthic (bottom-dwelling) invertebrates of the Silurian Period belonged to persistent assemblages, or communities, that commonly conformed to ecological zonation.
Silurian Period - Fishes, Reefs, Extinctions | Britannica
WEBEarly Silurian marine faunas recovered from a mass extinction brought on during late Ordovician times by climatic change and lowered sea levels. This mass extinction claimed 26 percent of all marine invertebrate families and 60 percent of …