American horsemussel
- kingdom: Animalia
- phylum: Mollusca
- class: Bivalvia
- order: Mytilida
- family: Mytilidae
- genus: Modiolus
- species: Modiolus americanus
Tuxpan de Rodríguez Cano
Veracruz
Mexico
San Diego
California- Key West
- Panama City
- Saint James City
Florida- Port Isabel
Texas
United States