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Subphylum Chelicarata

Class Arachnida



The subphylum Chelicerata comprises two classes; the Merostomata and the Arachnida. Whereas merostomes are aquatic, the arachnids are confined to the terrestrial realm, except for a few forms which are secondarily adapted to living in water.

The Arachnida encompass all spiders, scorpions, pseudoscorpions, mites, ticks, harvestmen and opiliones.

click on the links below to discover more about the arachnids

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Last updated: 20.11.05
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Websites produced by students on the MSc Palaeobiology programme in the Department of Earth Sciences at the University of Bristol for academic year 2005-6