| This is the tactic used by scorpions, another group of chelicerate predators. |
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| The chelicerate body plan is characterized by two tagmata, the prosoma, including head structures, and the opisthosoma. |
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| The chelicerate hemocyanin subunits are basal, consistent with the assumption that the Chelicerata is a rather distinct arthropod taxon. |
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| Insects are mandibulate, not chelicerate arthropods, like spiders. |
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| All chelicerate arthropods have this special first set of modified legs. |
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| They may represent a very early branching of the chelicerate lineage. |
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| They compared this to the nervous systems of horseshoe crabs and scorpions and found without doubt that the creature belonged to the chelicerate family. |
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