Article: The anatomy and phylogenetic position of Helichthys, a redfieldiiform fish from the Triassic of South Africa

The chondrostean redfieldiiform fish Helichthys, from the Triassic of Bekker's Kraal, South Africa, is redescribed. The genus is monospecific and five species are synonymized with the type-species H. browni. The possible phylogenetic position of the genus within the Redfieldiiformes is discussed.