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silurian period

 

Definitions from WordNet

Noun silurian period has 1 sense
  1. Silurian, Silurian period - from 425 million to 405 million years ago; first air-breathing animals
    --1 is a kind of period, geological period
    --1 is a part of Paleozoic, Paleozoic era

Definitions from the Web

Silurian Period

Noun

The Silurian Period is a geologic period that lasted from 443.7 to 416 million years ago. It is named after the Silures, a Celtic tribe of Wales, as rocks from this period were first studied in the Welsh borderland.

Sample Sentence:

The Silurian Period was characterized by the diversification of jawed fishes and the appearance of the first land-dwelling organisms.

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Books about the Silurian Period

Adjective

Silurian refers to anything that pertains to or is characteristic of the Silurian period.

Sample Sentence:

Fossils of Silurian corals were found in the sedimentary rocks.

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Silurian Fossils

Adverb

Silurianly means in a manner that relates to or resembling the Silurian period.

Sample Sentence:

The coral reef formation is silurianly beautiful.

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Silurian Nature Photographs
silphium laciniatum silpy water silt silt up silted siltstone silty silurian silurian period silurid silurid fish siluridae siluriform fish siluriformes silurus silurus glanis silva

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