Tetrapulmonata Shultz, 1990 Superorder Serikodiastida Garwood & Dunlop, 2014 Order Araneida Clerck, 1757 - spiders Suborder Araneae Clerck, 1757 - tailless spiders Infraorder Mesothelae Pocock, 1892 - segmented spiders Family Liphistiidae Thorell, 1869 [monotypic] 1 Genus Liphistius Schiødte, 1849