Fusulina illinoisensis
- kingdom: Chromista
- phylum: Foraminifera
- class: Tubothalamea
- order:
- family: Fusulinidae
- genus: Fusulina
- species: Fusulina illinoisensis
Caseyville
Illinois- Creve Coeur
Missouri
United States
Fusulina illinoisensis Caseyville Creve Coeur