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Arachnida |
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Arachnida [ə′rak·nəd·ə] (invertebrate zoology) A class of arthropods in the subphylum Chelicerata characterized by four pairs of thoracic appendages. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Ticks are blood-sucking ectoparasites of the class Arachnida. Selections from Bobby's spider journal are inserted throughout the story, providing a great deal of information about Arachnida. Spiders belong to the class arachnida, which includes scorpions, ticks and mites. |
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