👉 The term "Ophioglossopsida" is a group of marine gastropod mollusks, including the common ophiuchids and some species of the genus "Ophiuchus." These mollusks are known for their unique appearance, with a shell that resembles a spiral or spiral-like structure. They are characterized by their large size, which can reach several meters in length, and their ability to regenerate lost limbs through specialized structures called "spines."