Cyclonema adstrictum- Cyclonema humilis
- Diaphorostoma desmatum
- Diaphorostoma irrasum
- Diaphorostoma perceense
- Pileopsis cornuta
- Platyceras brownsportensis
- Platyceras gebhardi
- Platyostoma antiquum
- Platyostoma brownsportensis
- Platyostoma cliftonensis
- Platyostoma darwini
- Platyostoma hillsboroensis
- Platyostoma inornatum
- Platyostoma insolitum
- Platyostoma lineatum
- Platyostoma minutissima
- Platyostoma minutum
- Platyostoma niagarensis
- Platyostoma peoriense
- Platyostoma plebia
- Platyostoma tumidum
- Platyostoma turbinata
- Platyostoma ventricosum