Species
Acrograptus nicholsoni (Lapworth, 1875)
Synonymy list
1875     Didymograptus nicholsoni — Lapworth , pp. 644, fig. 33:5a-d
1937     Didymograptus nicholsoni Lapworth — Ekström , pp. 25, fig. 2:3-6
1973     Acrograptus nicholsoni (Lapworth) — Bouček , pp. 67, fig. 12:1-5, text-figs. 21a–f
2017     Acrograptus nicholsoni (Lapworth, 1875) — Chen, X. et al , pp. 102, fig. Figs. 6-3A–F; 6-4C
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Hemichordata | 
| Class | Pterobranchia | 
| Subclass | Graptolithina | 
| Suborder | Sinograptina | 
| Family | Sigmagraptidae | 
| Genus | Acrograptus | 
| Species | affinis | 
| euodus | |
| filiformis | |
| gracilis | |
| nicholsoni | |
| pusillus |