Were Shells Once Living?
These Animals Were Thought to Be Extinct Preserved Only in the Fossil Record Until 1952 When Live Specimens Were Discovered in Deep Ocean Waters. Their Simple...
These animals were thought to be extinct preserved only in the fossil record until 1952 when live specimens were discovered in deep ocean waters. Their simple shells are less complicated and evolutionarily advanced than other mollusks. They are an ancient species dating to some 500 million years ago.
Is a shell a living thing?
Seashells are a living thing when connected to the snail because its the snails calcium that grows and develops but when the snail dies the shell dies so therefore the seashell is not a living thing because it is dead.
Where do shells come from?
Most shells come from soft-bodied mollusks. Snails, clams, oysters, and others need the hard protection of their shells. This tough outer covering protects the tasty body hiding inside. Other animals, such as crabs and lobsters, also make a tough outer covering, but here we focus on mollusk shells.