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Q: Which period occurred about 438 mya when 75 percent of species disappeared?
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What is the a period of time called when many species disappeared?

A major extinction event.


What period do dinosaurs disappeared?

They disappeared in cretatucous Period . The last dinosaur in earth is barchiosaurus


What has occurred when large numbers of species Die over a short period of time?

Mass Extinction


What has occurred when large numbers of species die out over short period of time?

Mass Extinction


What occurred when large numbers of species die out over a short period of time?

Mass Extinction


Which period of the Renaissance occurred during the reign of Charles you?

The Caroline Period occurred during the reign of Charles I.


What developments in British literature occurred during the Medieval period?

The medieval period was the period in which the Old English had disappeared and the modern English come. It was a transition period. The first poet in modern English was Chaucer. Spencer came later. The modern English of Chaucer itself cannot be now read without a translation.Much could not be expected from that period. In addition to this the social development should also be taken into account. The middle class had then pushed aside the feudalism. In Social set up also it was a transition period. The feudalism had not disappeared and the middle class was yet to assert in the society. After all literature is a mirror of the society.


What era had 95 percent of species die out?

The worst known mass extinction in Earth's history was the Permian-Triassic Extinction Event at the end of the Permian period. The Permian period was the last period of the Paleozoic Era.


Which period of the renaissance occurred during the reign of Charles I?

Caroline Period


What has occurred when larte numbers of species die out over a short period of time?

When large numbers of species die out over a short period of time, it is referred to as a mass extinction event. These events are typically caused by major environmental changes, such as asteroid impacts, volcanic eruptions, or rapid climate change, that disrupt ecosystems and lead to widespread species loss. Mass extinctions have occurred several times in Earth's history, the most famous being the one that wiped out the dinosaurs around 66 million years ago.


What time period did 80 percent of all reptile species vanish?

6 million years ago when the asteroid took out all of the bloody dinosours


What were some major events in the Permian time period?

During the Permian period, Earth experienced the formation of the supercontinent Pangaea, extensive glaciation in the southern hemisphere, and the diversification of reptiles. The Permian-Triassic extinction event, the largest mass extinction in Earth's history, occurred at the end of the period, resulting in the loss of around 90% of marine species and 70% of terrestrial species.