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Chelicerata showcase.
63005
Chelicerata showcase.
http://natmus.uio.no/palmus/galleri/montre/english/m_klosaks_e.htm
Fossils on display, Geological Museum, University of Oslo, Norway: Chelicerata showcase
Biology > Biota > Fauna > Arthropoda > Chelicerata
horseshoe crabs cambrian list of contents sexual organs book lungs body segments pincer posterior part palaeozoic carboniferous
Jan 1, 2006
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Other links at Biology > Biota > Fauna > Arthropoda > Chelicerata
The Cheliceramorpha includes spiders and scorpions, mites and ticks, horseshoe crabs, daddy-longlegs, and extinct "sea-scorpions".
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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.
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Comment Citation: Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed June 07, 2007 at http://animaldiversity.org.
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ANIMAL BYTES - Chelicerata...Find quick information and fun facts about animals.
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Acari A brief introduction to the Acari or Mites. AmblypygiAn introduction to the Amblypygi or Whip Spiders. Arachnid An introduction to the Arachnida. Arachnophobia Notes on the fear of spiders. Araneae An introduction to the true spiders. Chelicerata An introduction to the Chelicerata.
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Site Index Site Search Home Data Search -- Plants/Animals -- Ecological Communities About the Data -- Data Coverage -- Data Types -- Sources About Us Contact Us Help -- Glossary -- Contact Us -- Site Search -- Help Topics User Preferences NatureServe Explorer Species Index Species Index Home
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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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The 75000 species within this subphylum belong to three diverse classes. The Classes Merostomata and Pycnogonida include relatively minor, aquatic organisms, the Class Arachnida comprises the vast majority of species (74000 + ) and includes spiders, scorpions, mites and ticks.
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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").
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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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