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Animalia
Arthropoda
Insecta
Ephemeroptera
Ephemerellidae
Attenella
Attenella delantala
Attenella soquele
Caudatella
Caudatella edmundsi
Caudatella hystrix
Caurinella
Caurinella idahoensis
Drunella
Drunella coloradensis
Drunella grandis
Drunella pelosa
Ephemerella
Ephemerella altana
Ephemerella delantala
Ephemerella edmundsi
Ephemerella glacialis
Ephemerella levis
Ephemerella pelosa
Ephemerella rama
Ephemerella sequoia
Ephemerella soquele
Ephemerella spinosa
Ephemerella verruca
Ephemerella wilsoni
Serratella
Serratella levis
Serratella sequoia