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Cambrian
[kam-bree-uhn]
adjective
Geology.noting or pertaining to a period of the Paleozoic Era, occurring from 570 million to 500 million years ago, when algae and marine invertebrates were the predominant form of life.
of or relating to Cambria; Welsh.
noun
Geology.the Cambrian Period or System.
a native of Cambria; Welshman.
Cambrian
/ ˈæɪə /
adjective
of, denoting, or formed in the first 65 million years of the Palaeozoic era, during which marine invertebrates, esp trilobites, flourished
of or relating to Wales
noun
the Cambrian period or rock system
a Welsh person
Cambrian
The first period of the Paleozoic Era, from about 540 to 505 million years ago. During this time warm seas and desert land areas were widespread, and animal life diversified rapidly during what is known as the Cambrian Explosion.
See Chart at geologic time
Other 51Թ Forms
- post-Cambrian adjective
51Թ History and Origins
Example Sentences
We don't really know why the Cambrian was so exceptionally diverse.
By Saturday morning, there may be up to 5cm of snow for some places in the Brecon Beacons, eastern Cambrian Mountains and perhaps the higher parts of Exmoor.
By the beginning of the Cambrian explosion of multicellular organisms about 540 million years ago, the ancestors of today’s ecdysozoans were already alive and varied in form and behavior, suggesting they arose even earlier.
The new nematode fossils predate those Cambrian creatures by about 15 million years, says Hughes, a graduate student at Harvard University.
The crash happened on the Cambrian Line on a single track, close to a passing loop where opposite travelling trains can pass each other.
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