Which lineage includes living members associated with adaptations such as squalene, spiral valve, electroreceptors, lateral line system, and claspers?

Question

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Chondrichthyes, or cartilaginous fish, have adaptations such as squalene (a buoyancy aid), spiral valve (improves nutrient absorption), electroreceptors (used for navigation and prey detection), lateral line system (sensitive to changes in water pressure), and claspers (a modified pelvic fin used for reproduction).

Which Lineage Includes Living Members Associated with Adaptations Such as Squalene