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The Silurian (/ s ɪ ˈ lj ʊər i. ən, s aɪ-/ sih-LURE-ee-ən, sy-) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at 443.8 million years ago , to the beginning of the Devonian Period, 419.2 Mya. The Silurian is the shortest period of the Paleozoic Era.
- Silurian Hypothesis
The Silurian hypothesis is a thought experiment [1] which...
- Silurian (Doctor Who)
The Silurians are a race of reptilian humanoids in the...
- Silurian Hypothesis
The Silurian Period. The Silurian (443.7 to 416.0 million years ago)* was a time when the Earth underwent considerable changes that had important repercussions for the environment and life within it. One result of these changes was the melting of large glacial formations. This contributed to a substantial rise in the levels of the major seas.
The Silurian was the period from the end of the Ordovician, about 443.4 million years ago (mya) to the beginning of the Devonian period, about 419 mya. It is the third period of the Paleozoic era and the Phanerozoic eon and the shortest period in the Paleozoic.
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Jul 12, 2020 · The Silurians – otherwise known as Homo Reptilia, or sometimes, the Eocenes – hadn’t seen seen in Doctor Who since 1984 when they made a return to the show in 2010 with the two-part Matt Smith story, The Hungry Earth / Cold Blood.
n. Palæozoic. Key events of the Silurian period. Axis scale: millions of years ago. The Silurian period is an interval of about 28 million years defined on the geologic timescale as spanning roughly from 444 to 416 million years ago (mya) and lying between the earlier Ordovician period and the later Devonian period.
