Parasitic roundworm
- kingdom: Animalia
- phylum: Nematoda
- class: Secernentea
- order: Ascaridida
- family: Ascarididae
- genus: Toxascaris
- species: Toxascaris leonina
Welwyn
England
United Kingdom
Crookston- Little Canada
- Vadnais Heights
Minnesota- Four Corners
- Miles City
Montana- Harrisburg
Nebraska- Roswell
New Mexico
United States