Arthromygalidae
The Arthromygalidae are an extinct family of arachnids, possibly spiders. Fossils placed in the family were all found in the Carboniferous,. They were considered by Alexander Petrunkevitch to be "mesotheles", i.e. placed in the spider suborder Mesothelae. Petrunkevitch used the family for Carboniferous fossils he regarded as mesotheles but which lacked eyes. Paul A. Selden has shown the fossil specimens only have "the general appearance of spiders", with segmented abdomens, but no definite spinnerets.Genera placed in the Arthromygalidae as of 2015 are shown below, together with the location of the fossils.
- †Arthromygale Petrunkevitch, 1923 – Rakovník
- †Eolycosa Kušta, 1885 – Rakovník
- †Geralycosa Kušta, 1888 – Rakovník
- †Kustaria Petrunkevitch, 1953 – Rakovník
- †Palaranea Frič, 1873 – Czech Republic
- †Protocteniza Petrunkevitch, 1949 – Coseley
- †Protolycosa Roemer, 1866 – Silesia, Cévennes
- †Rakovnicia Kušta, 1884 – Rakovník
