Jan 1, 1111
Beginning of the Paleozoic EraThe beginning of the Paleozoic Era. It spans from 541MYA to 251 MYA.
Jan 1, 1112
The first hard shelled animals appeared during the Cambrian, around 530 million years ago. This picture is a trilobite.
Jan 1, 1113
Tommotian Stage534-530 MYA Animals with shells appeared. This is a picture of a creature (trilobite) in the Tommotian Stage of the paleozoic era
May 8, 1114
Ordovician Period488-443 MYA
First vertebrates appear in the ocean.
First green plants and fungi on land.
2nd mass extinction. This is a picture during the Ordovician Period
Jan 1, 1115
Silurian Period443-416 MYA
Stabilization of the earth's climate
- Coral reefs appeared
- First fish with jaws - sharks
- Insects and plants appear on land
May 8, 1116
Devonian Period "The Green House Period"416-359 MYA
First amphibians appear
Wingless insects appeared on land
Formation of the first forests
Ferns and seed-bearing plants (gymnosperms) appeared
Jan 1, 1117
Carboniferous Period359-299 MYA
350 mya: Beginning of Karoo ice age
Large primitive trees develop
Forests consist of ferns, club mosses, horsetails, and gymnosperms.
Oxygen levels increase
Vertebrates appear on land
First winged insects.
Seas covered parts of the continents
Animals laying amniote eggs appear
Jan 1, 1118
Permian Period299-251 MYA
275 mya: Formation of the supercontinent Pangea
Conifers and cycads first appear
Earth is cold and dry
Jan 1, 1119
Permian periodThe Permian ended with the most catastrophic extinction that life on Earth has ever seen - the Permian-Triassic extinction event, which happened about 251 million years ago. About 90-95% of all marine species and about 70% of all land species became extinct.