👉 Scytonemataceous is a genus of marine gastropod mollusks in the family Scytonemataceae. These are a class of cephalopods that are often described as "scytonems." They have a shell with a flattened base and an apical process, which allows them to attach to other organisms. Scytonemataceous belong to the order Sicyonemata, and their typical size range is from 10