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The arthropod group Chelicerata includes animals as diverse as spiders, scorpions, mites, ticks and horseshoe crabs. In addition to these well-known living animals, it includes important extinct groups such as the eurypterids (sea "scorpions").
Cheli. 1 i Subphylum CHELICERATA i Questo subphylum dartropodi i fa parte dei Merostomata i, oggi rappresen- tati da soli tre generi, che vivono in ambienti marini marginali.
This review analyses the mechanisms of neurogenesis, the morphology of serotonergic interneurons, the number of motoneurons, and cellular features and development of the lateral eyes of Chelicerata.
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very reduced abdomen - typically have 1 pair chelicerae (3-segmented), 1 pair ovigers, 4 pair walking legs, and simple eyes - unusual reproductive biology: males brood embryos on special legs (ovigers); only arthropod group with sole male parental care!
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