Systematics Argentiniformes



opisthoproctus soleatus

(argentinoidea: opisthoproctidae)



suborder argentinoidei

family argentinidae (herring smelts)
family bathylagidae (deep-sea smelts)
family microstomatidae (pencil smelts)
family opisthoproctidae (barreleyes)



a fossil family might belong in order pattersonellidae.








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