Tetrapulmonata Shultz, 1990 Superorder Serikodiastida Garwood & Dunlop, 2014 Order Araneida Clerck, 1757 - spiders Suborder Araneae Clerck, 1757 - tailless spiders Infraorder Opisthothelae Pocock, 1892 - unsegmented spiders Microorder Araneomorpha Smith, 1902 - araneomorphs Clade Neocribellatae Caporiacco Praeentelegynae Wunderlich, 2019 Branch Austrochiloidea Zapfe, 1955 Family Gradungulidae Forster, 1955