1) First air-breathing animals 2) Geological period 3) Of a geological period 4) Period 5) Silurian period
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https://www.crosswordclues.com/clue/silurian
The Silurian is a geologic period and system that extends from the end of the Ordovician Period, about {Geologic Ages Inline|Silurian} million years ago (mya), to the beginning of the Devonian Period, about {Geologic Ages Inline|Devonian} mya {ICS 2004}. As with other geologic periods, the rock beds that define the period`s start and end are well....
Found on
http://en.wikipedia.org/wiki/Silurian
• (n.) The Silurian age. • (a.) Of or pertaining to the country of the ancient Silures; -- a term applied to the earliest of the Paleozoic eras, and also to the strata of the era, because most plainly developed in that country.
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http://thinkexist.com/dictionary/meaning/silurian/
A geological period; the third of the Paleozoic Era from 443 to 416Ma. The fossil record from this period includes a huge variety of marine fossils, land plants and early invertebrate land animals.
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http://www.encyclo.co.uk/local/20206
<geology> Of or pertaining to the country of the ancient Silures; a term applied to the earliest of the Paleozoic eras, and also to the strata of the era, because most plainly developed in that country. ... The Silurian formation, so named by Murchison, is divided into the Upper Silurian and Lower Silurian. The lower part of the Lower Siluria...
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http://www.encyclo.co.uk/local/20973
A period of the Paleozoic, thought to have covered the span of time between 443 and 417 million years ago; also, the corresponding system of rocks. The Silurian follows the Ordovician and precedes the Devonian; in the older literature, it was sometimes considered to include the Ordovician. It is named after the Silures, a Celtic tribe.
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http://www.encyclo.co.uk/local/22047
Si·lu'ri·an adjective [ From Latin
Silures , a people who anciently inhabited a part of England and Wales.]
(Geol.) Of or pertaining to the country of the ancient Silures; -- a term applied to the earliest of the Paleozoic eras, and also to the strata of the era, because most plainly devel...
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http://www.encyclo.co.uk/webster/S/103
Geologic period that occurred roughly 408 to 438 million years ago. During this period, the first plant and insect species appear.
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http://www.physicalgeography.net/physgeoglos/s.html
The Silurian was the fifth geological period, 335,000,000 years ago. This period marked the appearance of the first land plants.
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http://www.probertencyclopaedia.com/browse/HS.HTM
geological period from 440 to 395 million years ago. See time table.
Found on
http://www.seafriends.org.nz/books/glossary.htm
[
n] - from 405 million to 425 million years ago
Found on
http://www.webdictionary.co.uk/definition.php?query=Silurian
the period of geological time between 440 and 410 million years ago. The name comes from the Silures, a tribe of Celts. See Geological Timescale
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https://www.encyclo.co.uk/local/20800
A class of papers where the pulp is coloured separately with fast dyestuffs, darker fibres being added to produce a mottle-like appearance.
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https://www.encyclo.co.uk/local/20867
Silurian period noun from 425 million to 405 million years ago; first air-breathing animals
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https://www.encyclo.co.uk/local/20974
A period of the Paleozoic, spanning the time between 440 and 410 million years ago. It is named after a Celtic tribe called the Silures.
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https://www.encyclo.co.uk/local/21202
The period of time between 417 and 443 million years ago.
Found on
https://www.encyclo.co.uk/local/23001
No exact match found.
