Definition of Silurian period

1. Noun. From 425 million to 405 million years ago; first air-breathing animals.

Exact synonyms: Silurian
Group relationships: Paleozoic, Paleozoic Era
Generic synonyms: Geological Period, Period

Lexicographical Neighbors of Silurian Period

Silicon Sentier
Silicon Valley
Silicon Wadi
Silistra
Silk Road
Sillaginidae
Sillago
Sills
Silly Billies
Silly Billy
Silphium
Silphium laciniatum
Silteplase
Silurian
Silurian period
Siluridae
Siluriformes
Silurus glanis
Silvanus
Silver
Silver-Russell dwarfism
Silver-Russell syndrome
Silver City
Silver Star
Silver Star Medal
Silver State
Silverman illuminator
Silverskiold's syndrome

Literary usage of Silurian period

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Ancient Life-history of the Earth: A Comprehensive Outline of the by Henry Alleyne Nicholson (1897)
"CHAPTER X. THE UPPER silurian period. Having now treated of the Lower Silurian period at considerable length, it will not be necessary to discuss the ..."

2. The Ancient Life-history of the Earth: A Comprehensive Outline of the by Henry Alleyne Nicholson (1897)
"Having now treated of the Lower silurian period at considerable length, it will not be necessary to discuss the succeeding group of the Upper Silurian in ..."

3. The Ancient Life-history of the Earth: A Comprehensive Outline of the by Henry Alleyne Nicholson (1898)
"Having now treated of the Lower silurian period at considerable length, it will not be necessary to discuss the succeeding group of the Upper Silurian in ..."

4. The Ancient Life-history of the Earth: A Comprehensive Outline of the by Henry Alleyne Nicholson (1877)
"Having now treated of the Lower silurian period at considerable length, it will not be necessary to discuss the succeeding group of the Upper Silurian in ..."

5. The Ancient Life-history of the Earth: A Comprehensive Outline of the by Henry Alleyne Nicholson (1895)
"Having now treated of the Lower silurian period at considerable length, it will not be necessary to discuss the succeeding group of the Upper Silurian in ..."

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