Skip to main content
PRI State Scientific Surveys
Illinois Natural History Survey
|
Illinois State Archaeological Survey
|
Illinois State Geological Survey
|
Illinois State Water Survey
|
Illinois Sustainable Technology Center
Navigation
About ISGS
Research
Data
Publications
Maps
Services
Shop ISGS
Staff
You are here
Home
»
Outreach
»
Geology Resources
»
Glossary
» Paleozoic
Paleozoic
An era of geologic time, from the end of the Precambrian to the beginning of the Mesozoic, or from about 543 to about 248 million years ago.
Search form
Search