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there was plate tectonic movement
Irma Block
Wiki User
∙ 13y agoMass extinction, in which 60% of all marine invertebrate and 25% of all families went extinct. A large meteorite impact may have been responsible for the mass extinction marking the end of the Cambrian Period and the start of the Ordovician Period.
Wiki User
∙ 15y agoThe Ordovician-Silurian extinction as well as many new species
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What major geological events happened in the Devonian period?
Many plants evolved on land. These new types included ferns, clubmosses, and the first plants to reproduce with seeds.
Index fossils include graptolites?
Ordovician Period
How long did the Ordovician period last?
The Ordovician lasted for 47 million years from 490 to 443 Million Years Ago.
Which geological events destroy a part of the rock record?
Uplift and erosion over a long period of time are some of the various geologic events that can occur to eventually destroy a part of the rock record
Which period came first the Ordovician or the Carboniferous?
The Ordovician period came first. It started 485.4 million years ago and finished 443.8 million years ago. Then came the Silurian and Devonian periods, followed at 358.9 million years ago by the Carboniferous.
What are some important events that happened during the Ordovician time period?
You might see volcanic action.
What major geological events happened in the Devonian period?
Many plants evolved on land. These new types included ferns, clubmosses, and the first plants to reproduce with seeds.
What does the geological timescale encompass?
IT encompasses all of the geological time period that have happened since the begin of time
What came after the Ordovician period?
The Silurian period.
What period came after the Cambrian period?
Ordovician .
What time period did the Bachipods live in?
Ordovician Period
What minerals were in the ordovician period?
copper
What were the major geological events in the permian time period?
The only thing that I could answer is that Pangaea was formed.
What life forms existed in the silurian time period?
The Silurian went from 443.4 ± 1.5mya to 419.2 ± 3.2mya. It spanned from the conclusion of the Ordovician period to the beginning of the Devonian period. However the exact time frame of the Silurian period is unknown and could be off by millions of years because of the fact that that period was set during a significant extinction event. Therefore, the Silurian period lasted about 42 million years, give or take.
What period did the formation of the oxygen atmosphere occur?
The Ordovician Period
The Ordovician period follows the extinction at the end of which period?
Cambrain
Ended with the Taconian Orogeny?
Ordovician period
