Pseudorthoceras knoxense
- kingdom: Animalia
- phylum: Mollusca
- class: Cephalopoda
- order:
- family:
- genus: Pseudorthoceras
- species: Pseudorthoceras knoxense
Howard- Leavenworth
- Topeka
Kansas- Clinton
- Kansas City
- Rich Hill
- Warrensburg
Missouri- Ada
- Atoka
- Holdenville
- Okemah
Oklahoma- Graham
- Iraan
- Mineral Wells
- San Saba
Texas- Morgantown
- Westover
West Virginia
United States