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Did You Know? Arachnids Kingdom: Animalia Phylum: Arthropoda Subphylum: Chelicerata Class: Arachnida Order: Araneae Arachnids are a class (Arachnida) of joint-legged invertebrate animals in the arthropod subphylum Chelicerata. All arachnids have eight legs, although the front pair of legs in some species has converted to a sensory function, while in other species, different appendages can grow large enough to take on the appearance of extra pairs of legs. The term is derived from the Greek word ἀράχνη (aráchnē), meaning "spider". Almost all extant arachnids are terrestrial. However, some inhabit freshwater environments and, with the exception of the pelagic zone, marine environments as well. They comprise over 100,000 named species. To read a LOT more about Spiders and their record breaking achievements please click here for a local copy [Word doc 42pages] or go to Record breaking achievements by spiders and the scientists who study them [PeerJ] |
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