Silurian

Si·lu·ri·an

of the Silures
Origin of Silurian
because the rocks were first found in an area in southeastern Wales: see Silures
[sometimess-] designating or of the third geologic period of the Paleozoic Era, characterized by the development of coral reefs and small land plants, the first fish with jaws, and the first land arthropods

Silurian Idioms

the Silurian

the Silurian Period or its rocks

Webster's New World College Dictionary, Fifth Edition Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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"Silurian." YourDictionary, n.d. Web. 17 January 2019. <https://www.yourdictionary.com/Silurian>.

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Silurian. (n.d.). Retrieved January 17th, 2019, from https://www.yourdictionary.com/Silurian

Silurian

adjective

Of, relating to, or being the period of geologic time from about 444 to 416 million years ago, the third period of the Paleozoic Era. The Silurian Period is characterized by the development of jawed fishes, invertebrate land animals, and land plants. geologic time

noun

The Silurian Period.

Origin of Silurian

From Latin Silures an ancient people of southwest Wales, where the rocks were first identified

THE AMERICAN HERITAGE® DICTIONARY OF THE ENGLISH LANGUAGE, FIFTH EDITION by the Editors of the American Heritage Dictionaries. Copyright © 2016, 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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"Silurian." YourDictionary, n.d. Web. 17 January 2019. <https://www.yourdictionary.com/Silurian>.

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Silurian. (n.d.). Retrieved January 17th, 2019, from https://www.yourdictionary.com/Silurian

The third period of the Paleozoic Era, from about 438 to 408 million years ago. During this time glaciers that formed during the late Ordovician melted, causing sea levels to rise. The first coral reefs, fish with jaws, and freshwater fish appeared, and jawless fish continued to spread rapidly. The first vascular plants also appeared, as did land invertebrates including relatives of spiders and centipedes.

See Chart at geologic time

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MLA Style

"Silurian." YourDictionary, n.d. Web. 17 January 2019. <https://www.yourdictionary.com/Silurian>.

APA Style

Silurian. (n.d.). Retrieved January 17th, 2019, from https://www.yourdictionary.com/Silurian

SentencesSentence examples

Sentence Examples

The oldest rocks of Elba consist of schist and serpentine which in the eastern part of the island are overlaid by beds containing Silurian and Devonian fossils.
The Silurian system was marked by the retreat of the sea from central Australia; but the sea still covered a band across Victoria, from the coast to the Murray basin, passing to the east of Melbourne.
This Silurian sea was less extensive than the Ordovician in Victoria; but it appears to have been wider in New South Wales and in Queensland.
The best Silurian sequence is in New South Wales.
They became extinct in Palaeozoic times, and are chiefly found in the Upper Silurian, though extending upwards as far as the Carboniferous.

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WORDS NEAR Silurian IN THE DICTIONARY