- Swim around a Silurian reef at the Milwaukee Public Museum
Fossils of Illinois based on Collinson’s Guide for Beginning Fossil Hunters available from the ISGS.
- A geologic column from the ISGS.
- Illinois State Fossil – Tullimonstrum gregarium from ISGS.
- Illinois by time period and geological history of Illinois by a teacher at the University of Chicago Lab School, Flo Vaughn.
- Mazon Creek Project book review and information about this unique Pennsylvanian fauna.
- Mazon Creek online exhibit from the Illinois State Museum .
- Mazon Creek from the University of California Museum of Paleontology, Berkeley.