Order
Pectinida (Scallops and allies)
Pododesmus macrochisma. Photo: (c) Lena Dietz Chiasson, some rights reserved (CC BY-NC)
Pectinoida is a taxonomic suborder of large and medium-sized saltwater clams, marine bivalve mollusks, commonly known as scallops and their allies. It is believed that they began evolutionarily in the late Middle Ordovician era; many species, of course, are still extant.
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