*Joel Hallan's Biology Catalog (2005)*Harvestman: Order Opiliones Diagnostic photographs and information on North American harvestmen*Harvestman: Order Opiliones Diagnostic photographs and information on European harvestmen*University of Aberdeen: The Rhynie Chert Harvestmen (fossils)*National Museum page Classification of Opiliones A synoptic taxonomic arrangement of the order Opiliones, down to family-group level, including some photos of the families
) (Petrunkevitch, 1922) — Florissant, USA (Oligocene)* "Pellobunus proavus" Cokendolpher, 1987 (Laniatores: Samoidae) — Dominican amber* "Phalangium" species (Eupnoi: Phalangiidae) — near Rome, Italy (Quaternary)==References====External links==*Joel Hallan's Biology Catalog (2005)*Harvestman: Order Opiliones Diagnostic photographs and information on North American harvestmen*Harvestman: Order Opiliones Diagnostic photographs and information on European harvestmen*University of Aberdeen: The Rhynie Chert Harvestmen (fossils)*National Museum page Classification of Opiliones A synoptic taxonomic arrangement of the order Opiliones, down to family-group level, including some photos of the families