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Suborder Hypsidoroidei (catfish)

Actinopteri - Siluriformes

Parent taxon: Siluriformes according to J. S. Nelson et al. 2016

Sister taxa: Andinichthyidae, Bachmanniidae, Callitrichtyidae, Cetopsoidei, Diplomystoidei, Doradidae, Eopeyeria, Loricaroidei, Selenaspis, Siluroidei

Subtaxa: Hypsidoridae

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Ecology: nektobenthic carnivore

Distribution: found only at Horse Heaven Mine (Eocene of Oregon)

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