There are five groups that shells are separated into.
group 1. Gastropods - many snails live in them. most of these shells are spiral and the spiral goes clockwise. but some of them the spiral goes counter clockwise.(this group is made up of one shell and is also known as a univalve)
group 2. Bivalves- this group has clams, oysters, and scallop shells. they are not on dry land and sometimes you can find a pearl in side them. mantle scallop, blue mussel, sunrise tellin, and royal comb venus are also in this group.(this group is made up of two shells)
group 3. Scaphopoda(tooth shells)- these are hollow and open on both ends they are mostly found on the ocean floor. they can be white,red,green, or yellow. chambered nautilus and elephant's tusk shell are also a part of this group.
group 4. Cephalopoda(octopus and suid)- light and spongy looks like a ram's horn.found in the western pacific. nautilus shell is in this group.
group 5. Chitons- they are hard and white. they are shaped like a butterfly. They are called coats of mail because there shells look like tiny armor.
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group 1. Gastropods - many snails live in them. most of these shells are spiral and the spiral goes clockwise. but some of them the spiral goes counter clockwise.(this group is made up of one shell and is also known as a univalve)
group 2. Bivalves- this group has clams, oysters, and scallop shells. they are not on dry land and sometimes you can find a pearl in side them. mantle scallop, blue mussel, sunrise tellin, and royal comb venus are also in this group.(this group is made up of two shells)
group 3. Scaphopoda(tooth shells)- these are hollow and open on both ends they are mostly found on the ocean floor. they can be white,red,green, or yellow. chambered nautilus and elephant's tusk shell are also a part of this group.
group 4. Cephalopoda(octopus and suid)- light and spongy looks like a ram's horn.found in the western pacific. nautilus shell is in this group.
group 5. Chitons- they are hard and white. they are shaped like a butterfly. They are called coats of mail because there shells look like tiny armor.
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