Geologic Time Scale Quiz 2

During which period did many of the ancestors of the species that have evolved into what we know today first come into existence?

• Devonian Period

• Cambrian Period

• Silurian Period

• Ordovician Period

What marked the end of the Ordovician Period?

• Continents merging together

• Mass extinction caused by temperature change

• Glaciers moving out from the poles

• Large predators feasting on smaller animals

During which period did the first animals, the arthropods, appear on the continents?

• Cambrian Period

• Devonian Period

• Ordovician Period

• Silurian Period

What major event occurred during the Devonian Period?

• Diversification of species

• Mass extinction caused by meteorites

• Adaptation of jawless fish

• Formation of Pangaea

Which period saw the largely extinction of armoured fishes?

• Pennsylvanian Period

• Mississippian Period

• Devonian Period

• Permian Period

What caused the largest mass extinction in the history of the Earth?

• Adaptation of jawless fish

• Formation of Pangaea

• Glaciers moving out from the poles

• Volcanic explosions

Which period saw the continents merging together to form Pangaea?

• Ordovician Period

• Silurian Period

• Permian Period

• Cambrian Period

What was the result of the combination of temperature change and loss of ocean water during the Ordovician Period?

• Adaptation of jawless fish

• Diversification of species

• Mass extinction

• Formation of Pangaea

During which period did amphibians make their way onto land?

• Silurian Period

• Ordovician Period

• Cambrian Period

• Devonian Period

What type of fossil is associated with the Cambrian Period?

• Graptolites fossil

• Trilobite fossil

• Paradoxides fossil

• Agnatha fossil