Tags: Arachnid.
The Fornicephalae are an infraorder of mygalomorph spiders consisting of eight families with ca. 70 genera and 700 species. Atypoidea (Antrodiaetidae and Atypidae) Cyrtauchenioidea Idiopoidea Migoidea (Actinopodidae and Migidae)They are opposed to the Tuberculotae which make up the rest of the Mygalomorphae.However according to (Goloboff 1993) neither group appears to be monophyletic.