Hyloidea is a superfamily of frogs.[1] Hyloidea accounts for 54% of all living anuran species.[2] The superfamily Hyloidea branched off from its closest relative, the Australobatrachia, during the mid-Cretaceous.[3] The fossil evidence found during the Cretaceous-Paleogene extinction event could not determine the effects upon the frogs, due to the lack of fossils. Increased forestation erupted after this extinction, possibly leading to more arboreal adaptations of these anurans to be best suited for this habitat.[4]
^R.Alexander Pyron, John J.Wiens, 2011, A large-scale phylogeny of Amphibia including over 2800 species, and a revised classification of extant frogs, salamanders, and caecilians"Archived copy"(PDF). Archived from the original(PDF) on 2012-12-18. Retrieved 2013-04-22.{{cite web}}: CS1 maint: archived copy as title (link)