Species
Acrograptus affinis (Nicholson, 1869)
Synonymy list
1869     Didymograptus affinis — Nicholson , pp. 240, fig. pl. 11:20
1969     Acrograptus affinis — Tzaj , pp. 142-143, fig. fig. 1e
2012     Acrograptus affinis (Nicholson, 1869) — Li et al. , pp. 116, fig. 5a, 6a,g-j
2017     Acrograptus affinis (Nicholson, 1869) — Chen, X. et al. , pp. 99, fig. 6-2B–D
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 |