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Heptageniidae gen. et sp. indet.
family Heptageniidae Needham, 1901
Modern species: Late Cretaceous - Present (94.3 - 0.0 Ma)
Classification
kingdom Animalia, phylum Arthropoda,
class Insecta
,
order Ephemeroptera
Distribution
Miocene:
Fukui
Pleistocene:
Tochigi