†family Ischnacanthidae Woodward 1891 (spiny fish)

Chondrichthyes - Ischnacanthiformes - Ischnacanthidae

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

See also Denison 1979 and Jordan 1963

Sister taxa: Acritolepidae, Ischnacanthus, Podoliacanthus, Poracanthodidae, Serradentus, Xylacanthus

Subtaxa: Acanthodopsis Apateacanthus Gomphonchus Helenacanthus Ictinocephalus Marsdenius Persacanthus Uraniacanthus

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Ecology: nektonic carnivore

Distribution:

• Devonian of Bolivia (1 collection), Iran (1), New Zealand (1), United States (2: Nevada)

• Silurian of Australia (1), China (4), Estonia (2)

Total: 12 collections including 14 occurrences

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