Species
Callixylon trifilievii Zalessky, 1911
Klassificering
| Organism group | Biota |
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Archaeopteridophyta |
| Class | Archaeopteridopsida |
| Order | Archaeopteridales |
| Family | Archaeopteridacea |
| Genus | Callixylon |
| Species | trifilievii |