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When was the Cambrian period according to our geologic time scale?
Wiki User
∙ 8y ago
People think "explosion that must have happened in a second." It didn't. The Cambrian Explosion started approximately 542 million years ago, triggered by an suddenly-oxygen-rich atmosphere and the end of glaciation, and lasted for about 12 million years. This is VERY long.
Wiki User
∙ 13y ago
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Which is not a major period of the geologic time scale?
Cenozoic is not a major period of the geologic time scale. The scale is broken down into eras. Cenozoic, Mesozoic and Paleozoic are all part of the Phanerozic era.
Shorter than a period on the geologic time scale?
epochs
What era of the geologic time scale do you live in?
This period is called holocene.
Was era or period longer?
On the geologic time scale, an era is longer than a period. There are 12 geologic eras in total and they are composed of geologic periods. For instance, the Mesozoic era is composed of the Triassic, Jurassic and Cretaceous periods.
What categories are in the geologic time scale?
Eon, Era, Period, Epoch (from largest to smallest)
During which period in the geologic time scale was there a great increase in the variety of life forms on earth?
Cambrian perod
Which is not a major period of the geologic time scale?
Cenozoic is not a major period of the geologic time scale. The scale is broken down into eras. Cenozoic, Mesozoic and Paleozoic are all part of the Phanerozic era.
Shorter than a period on the geologic time scale?
epochs
What era of the geologic time scale do you live in?
This period is called holocene.
Which period in the geologic time scale did the penguins first live in?
Cenozoic
Was era or period longer?
On the geologic time scale, an era is longer than a period. There are 12 geologic eras in total and they are composed of geologic periods. For instance, the Mesozoic era is composed of the Triassic, Jurassic and Cretaceous periods.
What categories are in the geologic time scale?
Eon, Era, Period, Epoch (from largest to smallest)
What is a measurement of the earth history divided into time period?
fossil record geologic time scale
When do scientists think that humans first appeared in the geologic time scale?
They think in the messianic period
What is a measurement of the earths history divided into time period?
fossil record geologic time scale
What is a measurement of the Earth's history divided into time period?
fossil record geologic time scale
Which eras on the geologic time scale is divided into both periods and epochs?
The Paleozoic, the Mesozoic and the Cenozoic are all divided into periods and epochs.
