Arthrolycosa

Arthrolycosa (meaning wolf [spider] with joints) is an extinct genus of arachnids, possibly spiders, that lived about 300-250 million years ago.

Fossils have been found Mazon Creek USA, Piesberg in Germany and in the Kirov Oblast region, and the Kamensk-Shakhtinsky of Russia.

A. antiqua is estimated to have a body length of about 2.17 cm and may have preyed upon insects and other smaller animals that lived alongside them. A. wolterbeeki is the oldest spider known from Germany.

External links & References

 * Parker, Steve. Dinosaurus: the complete guide to dinosaurs. Firefly Books Inc, 2003. Pg. 75
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