Tetrapulmonata Shultz, 1990 Superorder Serikodiastida Garwood & Dunlop, 2014 Order Araneida Clerck, 1757 - spiders 1 Suborder †Chimerarachnida Wunderlich, 2018 [monotypic] - tailed spiders 2 Suborder Araneae Clerck, 1757 - tailless spiders