Why do snails belong to the Order stylommatophora?

Snails belong to the Order Stylommatophora primarily due to their unique anatomical features, including the presence of two pairs of tentacles on their heads, with the upper pair housing the eyes. This order is characterized by terrestrial gastropods that exhibit a coiled shell and a distinct body plan adapted for life on land. Additionally, members of Stylommatophora possess a lung-like structure, allowing them to respire air, which is essential for their terrestrial habitat. These traits collectively define their classification within this specific order.