Neospirifer dunbari
- kingdom: Animalia
- phylum: Brachiopoda
- class: Rhynchonellata
- order: Spiriferida
- family: Trigonotretidae
- genus: Neospirifer
- species: Neospirifer dunbari
Howard- Independence
Kansas- Fulton
- Kansas City
- Princeton
- Riverside
- Saint Joseph
Missouri- Ashland
- Louisville
- Plattsmouth
Nebraska- Brady
- Breckenridge
Texas
United States