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

Temporal range: Late Carboniferous to Late Permian
Arthrolycosa antiqua, Beecher illustration.jpg
Arthrolycosa antiqua, illustrated by C. E. Beecher
Scientific classification e
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae (?)
Family: Arthrolycosidae
Genus: Arthrolycosa
Harger, 1874
  • A. antiqua Harger, 1874
  • A. danielsi Petrunkevitch, 1913
  • A. carcinoides

Fossils have been found Mazon Creek USA and in the Kirov Oblast region of Russia.

A. antiqua is estimated to have a body length of about 2.17 cm[1] and may have preyed upon insects and other smaller animals that lived alongside them.

External links & ReferencesEdit

  1. ^ Selden, P. A. (2021). "New spiders (Araneae: Mesothelae), from the Carboniferous of New Mexico and England, and a review of Paleozoic Araneae". New Mexico Museum of Natural History and Science Bulletin. 84: 317–358.
  • Parker, Steve. Dinosaurus: the complete guide to dinosaurs. Firefly Books Inc, 2003. Pg. 75
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