One of the mysteries of the English language finally explained.
A large group of arthropods that comprises the arachnids, sea spiders, and horseshoe crabs. They lack antennae, but possess a pair of chelicerae, a pair of pedipalps, and (typically) four pairs of legs.
- ‘Arthropods have traditionally been divided into four classes: Trilobita, Chelicerata, Crustacea, and Uniramia.’
- ‘One of these pairs is expected to be the homologue to the chelicerae of the Chelicerata.’
- ‘The Chelicerata are distinguished by the absence of antennae, and the presence of fangs or chelicerae (the first pair of appendages) rather than mandibles.’
- ‘Two of these include the first reported rearrangements of arthropod protein-coding genes outside of the Chelicerata.’
- ‘Generations of morphologists have been unable to determine the branching order of Chelicerata, Myriapoda, Crustacea and Insecta.’
Modern Latin (plural), from Greek khēlē ‘claw’ + keras ‘horn’.
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