Snails have shells the moment they're born, but it's kind of hard to tell. In fact, it's hard to even see a baby snail. Some are nearly microscopic, such as Angustopila psammion, whose adult-sized ...

Snails (Gastropoda) are a stroke of luck for paleontologists: because of their hard shells, these animals are very often preserved as fossils. Snails therefore form an important and well represented ...

Environmentalists are urging federal officials to save a pair of Northwest species that you’ve probably never heard of. If you’ve seen one of them, you might have mistaken it for a pebble on the ...