pteriomorphia
Pteriomorphia is a subclass of bivalve mollusks, characterized by their hinged, two-part shells. The term "pteriomorphia" is derived from the Greek words "pteron," meaning wing, and "morph," meaning form, reflecting the wing-like shape of the shell valves. This subclass includes a diverse range of species, from small, microscopic forms to large, commercially important ones.
The shells of pteriomorphs are typically asymmetrical, with one valve being larger and more convex than the
Pteriomorphia is further divided into two main groups: Heterodonta and Homodonta. Heterodonta, or true clams, have
The subclass Pteriomorphia is of significant ecological and economic importance. Many species play crucial roles in