perekond
Keircalia Smith, 1909
Klassifikatsioon
| organismirühm | Biota |
| ihnorühm | Ichnofossils |
| Bioturbation trace fossils | |
| Trackways and scratch imprints | |
| sugukond | Protichnidae |
| perekond | Glaciichnium |
| Keircalia | |
| Mitchellichnus | |
| Paleohelcura | |
| Protichnites | |
| Siskemia | |
| Stiallia | |
| Stiaria |