Crab by name, not by classificationSourced
Horseshoe crabs belong to the chelicerates
Despite the common name, horseshoe crabs are not crustaceans. They belong to the chelicerates, the larger group that also contains spiders and scorpions. A shell-inspired everyday name and a biological classification describe different aspects of the animal.
The last word of a name does not identify every relative.
Summary / translation: Unbubly · CC BY-SA 4.0
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Horseshoe crab · Wikimedia contributors
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Reviewed: 2026-10-05