A1 Saturday and Sunday, or Friday evening until Sunday night; the part of the week in which many people living in the West do not go to work: This/Next weekend we're going to see some friends. I have a lot of homework to do over the weekend. He spent the weekend fishing with his brother.
clams, mussels, oysters, and scallops (class Bivalvia) 1  ark shell (family Arcidae) 2  cockles (family Cardiidae) 3  coquina clam (genus Donax) 4  gaper clams (Tresus nuttallii and Tresus capax) 5  geoduck (Panopea generosa) 6  jingle shells (family Anomiidae) 7  mussels (families Mytilidae and Unionidae) zebra mussel (genus Dreissena) 8  genus Nuculana.
Phylum Mollusca - Mollusks - includes snails, slugs, clams, scallops, oysters, cuttlefish, squid, octopus Widespread and abundant in marine, freshwater and terrestrial habitats Surpassed by only arthropods in terms of success on land Includes some of the largest invertebrates: giant squid, and giant clam Economically important as human foods,