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This list of the prehistoric life of Illinois contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Illinois. Precambrian [ edit ]
This list of the Paleozoic life of Illinois contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Illinois and are between 538.8 and 252.17 million years of age.
The environment of Pennsylvanian Illinois was comparable to the modern Amazon River delta. [9] Almost every Pennsylvanian deposit in Illinois preserves evidence of this ancient flora and such deposits are located in almost every region of the state. [12] The vegetation of these ancient swamps became Illinois' modern coal deposits. [9] [11]
A map showing approximate areas of various Mississippian and related cultures. The Koster Site is located near the center of this map in the upper part of the Middle Mississippi area. The Koster Site is a prehistoric archaeological site located south of Eldred, Illinois. The site covers more than 3 acres and extends 30 feet down into the ...
Ordovician rocks in Illinois are divided into three series, each separated by an unconformity; from oldest to youngest, these are the Canadian, Champlainian, and Cincinnatian series. Ordovician features in Illinois include the now-buried Glasford Structure in Peoria County , a crater caused by a meteorite impact roughly 455 million years ago.
Map of Oak Forest site showing house locations Map of House 1. A total of 8 house structures and 17 features were identified during the 1958 excavations. The house structures ranged from 25 to 47.5 feet long and 12–15 feet wide. Some of the houses had pit features as well (fire pits and refuse pits). [2]
The Hoxie Farm site (11Ck-4) is located on Thorn Creek in Thornton, Illinois Cook County Forest Preserve in Cook County, Illinois, near the city of Chicago. It is classified as a late prehistoric to Protohistoric /Early Historic site with Upper Mississippian Huber affiliation.
The Illinois Salines, also known as the Saline Springs or Great Salt Springs, is a salt spring site located along the Saline River in Gallatin County, Illinois.The site was a source of salt for Illinois' prehistoric settlers and is now an archaeological site with a large quantity of organic remains.