perekond
Laevicyclus Quenstedt, 1879
Taksoni kirjeldused
Knaust, 2015b
Diagnosis (emended): Cylindrical vertical burrows with an actively filled mantle and a passively filled core. The aperture can be funnelshaped enlarged.
Klassifikatsioon
| organismirühm | Biota |
| ihnorühm | Ichnofossils |
| Bioturbation trace fossils | |
| sugukond | Siphonichnidae |
| perekond | Hillichnus |
| Laevicyclus | |
| liik | parvus |
| perekond | Parahaentzschelinia |
| Scalichnus | |
| Siphonichnus |