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The presence of mouthparts known as "chelicerae" links the Atlantic Horseshoe Crab (Limulus polyphemus) to the subphylum Chelicerata including Eurypterids, spiders, scorpions, harvestmen, ticks, mites and sun spiders.

Because chelicerae are found among these organisms and no other, which designation would this characteristic be given from a cladistic perspective?

A

Analogous.

B

Autapomorphy.

C

Symplesiomorphy.

D

Synapomorphy.

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