Silurian

Si·lu·ri·an

S0409500 (sĭ-lo͝or′ē-ən, sī-)adj. 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. See Table at geologic time.n. The Silurian Period.

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

Silurian

(saɪˈlʊərɪən) adj1. (Geological Science) of, denoting, or formed in the third period of the Palaeozoic era, between the Ordovician and Devonian periods, which lasted for 25 million years, during which fishes first appeared2. (Peoples) of or relating to the Silures3. (Historical Terms) of or relating to the Siluresn (Geological Science) the Silurian the Silurian period or rock system

Si•lu•ri•an

(sɪˈlʊər i ən, saɪ-)

adj. 1. of or designating a period of the Paleozoic Era, occurring from 425 million to 405 million years ago, marked by the advent of air-breathing animals and terrestrial plants. n. 2. the Silurian Period or System. [1835; < Latin Silur(es) a Celtic tribe of ancient SE Wales]

Si·lu·ri·an

(sĭ-lo͝or′ē-ən) The third period of the Paleozoic Era, from about 438 to 408 million years ago, characterized by the appearance of jawed fish and the rise of the first land plants and invertebrate land animals. See Chart at geologic time.

Thesaurus

Noun

1.

Silurian - from 425 million to 405 million years ago; first air-breathing animalsSilurian periodPaleozoic, Paleozoic era - from 544 million to about 230 million years ago

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