What is Hyla?
{{italictitle}} {{about|the frog genus|the human first name and last name|Hyla (name)}} {{Automatic taxobox | fossil_range = {{fossil range|37.2|0}} [[Eocene]] to recent | image = Laubfrosch cropped.jpg | image_caption = [[European tree frog]], ''Hyla arborea'' | taxon = Hyla | authority = [[Joseph Nicolai Laurenti|Laurenti]], 1768 | subdivision_ranks = Species | subdivision = See text }} '''''Hyla''''' is a [[genus]] of [[tree frog]]s in the family [[Hylidae]]. Over the years, scientists have changed their minds about which frog species should be in ''Hyla'' and which should be in ''[[Litoria]]'', ''[[Ranoidea]]'' or other genera. At one time, ''Hyla'' had more than 300 species from Europe, Asia, Africa, and across the Americas. Now, ''Hyla'' has only 17 extant (living) species. They are from Europe, northern Africa and Asia.<ref>{{aut|Faivovich, J.; Haddad, C.F.B.; Garcia, P.C.A.; Frost, D.R.; Campbell, J.A.; Wheeler, W.C.}}, 2005: Systematic Review of the Frog Family Hylidae, with Special Reference to Hylinae: Phylogenetic Analysis and Taxonomic Revision. ''Bulletin of the American Museum of Natural History'', Num. '''294''', pp.1-240. (http://digitallibrary.amnh.org/dspace/bitstream/2246/462/1/B294.pdf {{Webarchive|url=https://web.archive.org/web/20070221131729/http://digitallibrary.amnh.org/dspace/bitstream/2246/462/1/B294.pdf |date=2007-02-21 }})</ref> The earliest known [[fossil]] from a ''Hyla'' frog is †''[[Hyla swanstoni]]'' from the [[Eocene]]. The fossil was found in [[Saskatchewan]], Canada,<ref>{{Cite web|url=http://fossilworks.org/bridge.pl?a=taxonInfo&taxon_no=37471&is_real_user=1|title=Fossilworks: Hyla|website=fossilworks.org|access-date=2019-05-31|archive-date=2020-02-08|archive-url=https://web.archive.org/web/20200208124724/http://fossilworks.org/bridge.pl?a=taxonInfo&taxon_no=37471&is_real_user=1|url-status=dead}}</ref> but it is not clear whether we would consider ''swanstoni'' a ''Hyla'' frog today. [[Josephus Nicolaus Laurenti]] made the genus in 1768. He named it after [[Hylas]] from