Species
Streptograptus johnsonae Loydell, 1991
Synonyymit
1991     Streptograptus johnsonae sp. nov. — Loydell , pp. 233, fig. 11c; 21c; 22g-i
1993     Streptograptus johnsonae Loydell, 1991 — Loydell , pp. 93, fig. 3:12; 21-22,30
2003     Streptograptus johnsonae Loydell — Loydell et al. , pp. 211, fig. 6s
2004     Streptograptus johnsonae Loydell, 1991 — Loydell et Maletz , pp. 79, 81, fig. 15-16
2010     Streptograptus johnsonae Loydell — Loydell et al. , pp. 254-255, fig. 2i
Aiheeseen liittyvät julkaisut
Loydell, D. K., Nestor, V., Männik, P. 2010. Integrated biostratigraphy of the lower Silurian of the Kolka-54 core, Latvia.  Geological Magazine   147,   2,   253-280. DOI:10.1017/S0016756809990574
Loydell, D. K., Maletz, J. 2004. The Silurian graptolite genera Streptograptus and Pseudostreptograptus.  Journal of Systematic Palaeontology   2,   2,   65-93. DOI:10.1017/S1477201904001117
Loydell, D. K., Männik, P., Nestor, V. 2003. Integrated biostratigraphy of the lower Silurian of the Aizpute-41 core, Latvia.  Geological Magazine   140,   2,   205-229. DOI:10.1017/S0016756802007264
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Luokittelu
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Hemichordata | 
| Class | Pterobranchia | 
| Subclass | Graptolithina | 
| Order | Graptoloidea | 
| Suborder | Axonophora | 
| Family | Monograptidae | 
| Genus | Streptograptus | 
| Species | anguinus | 
| ansulosus | |
| antennularius | |
| barrandei | |
| crispus | |
| dalecarlicus | |
| exiguus | |
| filiformis | |
| johnsonae | |
| kaljoi | |
| loydelli | |
| nodifer | |
| plumosus | |
| pseudobecki | |
| retroflexus | |
| sartorius | |
| speciosus | |
| storchi | |
| tenuis | |
| whitei | |
| wimani | 
Levinneisyys ja viitteet
- Loydell et al., 2010 Kolka 54 borehole 601 - Adavere Stage
 - Loydell et al., 2003 Aizpute 41 borehole 964.62 - Aeronian
 - Loydell & Maletz, 2004 Osmundsberget Quarry Silurian