Crurithyris planoconvexa
- kingdom: Animalia
- phylum: Brachiopoda
- class: Rhynchonellata
- order: Spiriferida
- family: Ambocoeliidae
- genus: Crurithyris
- species: Crurithyris planoconvexa
Abingdon- La Salle
- Springfield
Illinois- Manhattan
Kansas- Fulton
- Gallatin
- Saint Joseph
- Warrensburg
Missouri- Ashland
- Louisville
- Nebraska City
- Plattsmouth
Nebraska- Mineral Wells
Texas
United States