Costispirifer arenosus
- kingdom: Animalia
- phylum: Brachiopoda
- class: Rhynchonellata
- order: Spiriferida
- family: Cyrtospiriferidae
- genus: Costispirifer
- species: Costispirifer arenosus
Cumberland
MarylandCobleskill
Schoharie
New YorkMonterey
Timberville
Virginia
United States