Eodiscoglossus
| Eodiscoglossus Temporal range: Early Cretaceous,
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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
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| 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 Formation of Spain, 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 Formation of Mongolia.[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. oxoniensis to Eodiscoglossus 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]
See also
[edit]
References
[edit]- ^ "†Eodiscoglossus Villalta 1957". Paleobiology Database. Fossilworks. Retrieved 17 December 2021.
- ^ a b Hecht, Max K. (1970). "The morphology of Eodiscoglossus, a complete Jurassic frog". American Museum Novitates (2424): 1–17. hdl:2246/2634.
- ^ a b Báez, Ana Maria; Gómez, Raúl O. (2016). "Revision of the skeletal morphology of Eodiscoglossus santonjae, an Early Cretaceous frog from northeastern Spain, with comments on its phylogenetic placement". Fossil Imprint. 72 (1–2): 67–77. doi:10.14446/fi.2016.67. ISSN 2533-4069.
- ^ Shishkin M. A. (2000) Mesozoic amphibians from Mongolia and the Central Asiatic republics, The Age of Dinosaurs in Russia and Mongolia, 297-308
- ^ Gómez, Raúl O.; Lires, Andres I. (October 2019). "High ecomorphological diversity among Early Cretaceous frogs from a large subtropical wetland of Iberia". Comptes Rendus Palevol. 18 (7): 711–723. Bibcode:2019CRPal..18..711G. doi:10.1016/j.crpv.2019.07.005. hdl:11336/148671.
- ^ Báez, Ana M.; Gómez, Raúl O. (2019). "Redescription of the overlooked basal frog Wealdenbatrachus reveals increased diversity among Early Cretaceous anurans". Cretaceous Research. 99: 14–29. Bibcode:2019CrRes..99...14B. doi:10.1016/j.cretres.2019.02.006. S2CID 133867438.
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