Illinoian

Etymology
From.

Adjective

 * 1)  Of or relating to the Illinoian stage.
 * the 
 * the 

Noun

 * 1)  A stage of the last Ice Age in North America, lasting from around 190,000 to 130,000 years ago.
 * 1)  A stage of the last Ice Age in North America, lasting from around 190,000 to 130,000 years ago.