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Arthropoda US English

A large phylum of invertebrate animals that includes insects, spiders, crustaceans, and their relatives. They have a segmented body, an external skeleton, and jointed limbs, and are sometimes divided among several phyla

Arthropoda in arthropod US English

An invertebrate animal of the large phylum Arthropoda, such as an insect, spider, or crustacean

Arthropoda in Chelicerata US English

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

Arthropoda in trilobite US English

An extinct marine arthropod that occurred abundantly during the Paleozoic era, with a carapace over the forepart, and a segmented hind part divided longitudinally into three lobes

Arthropoda in tongue worm US English

A flattened wormlike parasite that infests vertebrates, especially reptiles, having a sucking mouth with hooks for attachment to the lining of the respiratory tract