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Pennsylvanian Period
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Pennsylvanian Period
By: Kailyn Skuse
The Pennsylvainian period happened 323.3 mya to 298.9 mya. It happened between the Missispipian and Permain period. It is known as the time of adaptation.
When Was The Pennsylvanian Period
The pensylvanian period was a time of a lot of climate change. With a change from glacier period to interglacier period the tempature increased. With the tempature increasing there were many new water landforms made. Mostly swamps.
What Did The World
Look Like
There were very little amount of mammals during the pennsylvanian period, but there were a lot of reptiles, amphibians, and aquatic vertebrates. Many adaptations happened due to the increase in tempature. When the sea was out, the low coastal plains were covered with forests full of seed ferns, ferns, scale trees, calamite trees, and cordaite trees.
What Animals/Plants Were Around
Examples of adaptated animals
Some dragonflies had wingspans of up to 2.5 feet and some cockroaches were a foot long.
The Lepospondylians became extinct during the Pennsylvainian Period. They were in the North America and Eurape regian.
Extinction of the Lepospondyian
How Did The Pennsylvanian Period End
The Pennsylvainian period ended due to dry climates which dried up lakes, swamps, etc. Sense they dried life died because many lived in water and needed water to survive. With the loosing water and the different climate many died.
A lot of the worlds coal comes from the Pennsylvanian Period. Coal is made up out of plants. It is very important and is getting harder to find. It is used to generate electrical energy which is very important for society today. A lot of coal was created from this time period because of all of the swamps.