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"Mussel attached by a byssus to a rock." — Goodrich, 1859

Mussel

"Mussel attached by a byssus to a rock." — Goodrich, 1859

"Mytilus edulis, attached by byssus (By) to a piece of wood. F, foot; S, exhalant siphon." -Parker, 1900

Blue Mussel

"Mytilus edulis, attached by byssus (By) to a piece of wood. F, foot; S, exhalant siphon." -Parker,…