Back جناحيات الشكل Arabic جناحيات الشكل ARZ Pteriomorphia Azerbaijani Pteriomorfs Catalan Pteriomorphia German Pteriomorphia Spanish Pteriomorphia Basque بالهایریختان Persian Rihmakiduksiset Finnish Pteriomorphia French
| Pteriomorphia | |
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| A live individual of Argopecten irradians, family Pectinidae | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Subclass: | Pteriomorphia Beurlen, 1944 |
The Pteriomorphia comprise a subclass of saltwater clams, marine bivalve molluscs.[1] It contains several major orders, including the Arcida, Ostreida, Pectinida, Limida, Mytilida, and Pteriida. It also contains some extinct and probably basal families, such as the Evyanidae, Colpomyidae, Bakevelliidae, Cassianellidae, and Lithiotidae.
This subclass of molluscs has lamellibranch gills, and is epibenthic. Some attach to the substrate using a byssus. The foot is reduced. The mantle margins are not fused. Gills are usually large and assist in feeding. This group includes the well known mussels, scallops, pen shells, and oysters.[2] It also includes the only members of the class bivalvia to have rudimentary eyes.
- ^ Pteriomorphia Beurlen, 1944. Retrieved through: World Register of Marine Species on 26 March 2009.
- ^ Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 430. ISBN 978-0-03-056747-6.