| 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 | |
ThePinnidae are ataxonomicfamily of large saltwater clams sometimes known aspen shells. They aremarinebivalvemolluscs in the orderPteriida.
The shells of bivalves in this family are fragile and have a long and triangular shape, and in life the pointed end is anchored in sediment using abyssus. The shells have a thin but highly iridescent inner layer ofnacre in the part of the shell near theumbos (the pointed end).
The family Pinnidae includes the fan shell,Atrina fragilis, andPinna nobilis, the source ofsea silk. Some species are also fished for their food value.
As Joseph Rosewater[1] commented in 1961:
"“The Pinnidae have considerable economic importance in many parts of the world. They produce pearls of moderate value. In the Mediterranean area, material made from the holdfast or byssus ofPinna nobilis Linné has been utilized in the manufacture of clothing for many centuries: gloves, shawls, stockings and cloaks. Apparel made from this material has an attractive golden hue and these items were greatly valued by the ancients.Today, Pinnidae are eaten in Japan, Polynesia, in several other Indo-Pacific island groups, and on the west coast of Mexico. In Polynesia, the valves ofAtrina vexillum are carved to form decorative articles, and entire valves of larger specimens are sometimes used as plates.”
Genera within the family Pinnidae:
