Eodiscoglossus
Eodiscoglossus is an extinct genus of prehistoric frogs. It is known from the type species E. santonjae from the Early Cretaceous of Spain, as well as a referred species E. oxoniensis known from the Forest Marble Formation of the UK. It was a small primitive frog, with a length of only from the premaxilla to the ischium. Formerly considered to be closely related to discoglossids, now is regarded as close to the root of all extant frogs. The referral of E. oxoniensis to Eodiscoglossus has been questioned, as it is much earlier than the type species and it is based on homoplasic and pleisomorphic characteristics inherited from a common ancestor, so there is no clear evidence of a close relation.
