Species
Didymaulichnus alternatus Pickerill, Ronano et Melendez, 1984
Taxon description
Pickerill et al., 1984b
Diagnosis.: Smooth, straight, gently curved to slightly sinuous Didymulichnus burrows composed of alternating deep and less deeply impressed sections giving the burrow a step-wise or castellate longitudinal section.
Synonymy list
1984     Didymaulichnus alternatus n. sp. — Pickerill et al. , pp. 260, fig. 4a-c 
Classification
| Organism group | Biota | 
| Ichnofossil group | Ichnofossils | 
| Bioturbation trace fossils | |
| Genus | Didymaulichnus | 
| Species | alternatus | 
| lyelli | |
| meanderiformis | |
| miettensis | |
| nankervisi | |
| nerodenkoi | |
| tirasensis |