Species
Ischnacanthus gracilis (Egerton, 1861)
Synonymy list
1861 Diplacanthus gracilis — Egerton , pp. 69-71, fig. pl. 9
1864 Ischnacanthus gracilis — Powrie , pp. 419-420
1870 Diplacanthus gracilis, Eg. — Powrie , pp. 287, 289, 290, fig. pl. 10, fig. 2
1947 Ischnacanthus gracilis (Egerton) — Gross , pp. 124
2018 Ischnacanthus gracilis (Egerton, 1861) — Burrow et al. , pp. 341, fig. Text-figs 1–13
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Chordata |
| Subphylum | Vertebrata |
| Infraphylum | Gnathostomata |
| Class | Acanthodii |
| Order | Ischnacanthiformes |
| Family | Ischnacanthidae |
| Genus | Ischnacanthus |
| Species | gracilis |