| Pinnidae | |
|---|---|
| |
| Pinna nobilis shell and byssus | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Pteriida |
| Superfamily: | Pinnoidea Leach, 1819 |
| Family: | Pinnidae Leach, 1819 |
| Genera | |
|
See text | |
The Pinnidae are a taxonomic family of large saltwater clams sometimes known as pen shells. They are marine bivalve molluscs in the order Pteriida.