| Eodiscoglossus
Temporal range: Early Cretaceous, Barremian–Albian
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| Holotype specimen of E. santonjae | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Amphibia |
| Order: | Anura |
| Genus: | †Eodiscoglossus Villalta, 1957 |
| Type species | |
| Eodiscoglossus santonjae Villalta, 1957 | |
| Other species | |
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Eodiscoglossus is an extinct genus of prehistoric frogs. It is known from the type species E. santonjae from the Early Cretaceous (Barremian) El Castellar FormationofSpain, as well as a referred species E. oxoniensis known from the Forest Marble Formation of the UK[1][2][3] and an indeterminate species from the Dzunbain FormationofMongolia.[4] It was a small primitive frog, with a length of only 27 mm (1.1 in) from the premaxilla to the ischium.[2] Formerly considered to be closely related to discoglossids, E. santonjae is now regarded as close to the root of the crown group of modern frogs[3] in a position more derived than New Zealand frogs and tailed frogs, but more basal than costatans like alytids and other more advanced frogs like neobatrachians. The morphology of E. santonjae suggests a generalist and unspecialised movement habit.[5] The referral of E. oxoniensistoEodiscoglossus has been questioned, as it is much earlier than the type species and it is based on homoplasic and plesiomorphic characteristics inherited from a common ancestor, so there is no clear evidence of a close relation.[6]
| Eodiscoglossus |
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