| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| Animalia | Chordata | Elasmobranchii | Rajiformes | Sclerorhynchidae |
| Rank | Scientific name | Taxonomic status |
|---|---|---|
| species | Ischyrhiza antiqua (Leidy, 1856) | accepted |
| species | Ischyrhiza avonicola Estes, 1964 | accepted |
| species | Ischyrhiza germaniae Weiler & Albers, 1964 | accepted |
| species | Ischyrhiza hartenbergeri Cappetta, 1975 | accepted |
| species | Ischyrhiza iwakiensis Uyeno & Hasegawa, 1986 | accepted |
| species | Ischyrhiza mira (Leidy, 1856) | accepted |
| species | Ischyrhiza nigeriensis Tabaste, 1963 | accepted |
| species | Ischyrhiza serra Nessov, 1997 | accepted |
| species | Ischyrhiza viaudi Cappetta, 1981 | accepted |
| species | Onchosaurus marrocanus (Arambourg, 1935) | accepted |
| species | Plesiosaurus chilensis (Gay, 1848) | accepted |
Ischyrhiza Leidy, 1856. GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via biodiversity.aq on 2021-09-09.