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Aokiichthys
''Aokiichthys'' is an extinct genus of basal osteoglossoid from an Early Cretaceous freshwater palaeolake of what is now Kyushu, Japan. The genus formed a species radiation in the First Formation within the Wakino Subgroup of the Kwanmon Group, as a dominant member and namesake of the ''Nipponamia''-''Aokiichthys'' fauna. The genus went extinct at the end of either the 1st Formation, or possibly during the 2nd Formation, when the palaeolake became shallower. ''Aokiichthys'' is described as being closely related to the genera ''Yungkangichthys'', and ''Paralycoptera'' (at the time of ''Aokiichthys description, all three genera were thought to be lycopterids). In their 2009 study, Xu and Chang reassess ''Paralycoptera'' to be a basal osteoglossoid, and synonymized both ''Yungkangichthys'' and ''Aokiichthys'' into ''Paralycoptera''. ==Etymology== The generic name honors one (Mr. Tateyu) Aoki, who collected and donated the majority of the first specimens.〔
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