Species
Baltograptus geometricus (Törnquist, 1901)
Synonymy list
1994     Baltograptus geometricus (Törnquist, 1901) — Maletz , pp. 36
2004     Baltograptus geometricus — Bergström et al. , pp. 268
Selection of related publications
Bergström, S. M., Löfgren, A., Maletz, J. 2004. The GSSP of the Second (Upper) Stage of the Lower Ordovician Series: Diabasbrottet at Hunneberg, Province of Västergötland, Southwestern Sweden.  Episodes   27,   4,   265-272.
Kaljo, D. 1974. On graptolite zones of Tremadoc and Arenig of Pribaltic and Moscow syneclises.  Graptolites of the USSR, pp. 31-36.   Nauka. 
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Hemichordata | 
| Class | Pterobranchia | 
| Subclass | Graptolithina | 
| Order | Graptoloidea | 
| Suborder | Dichograptina | 
| Family | Didymograptidae | 
| Genus | Baltograptus | 
| Species | deflexus | 
| extremus | |
| floianus | |
| geometricus | |
| jacksoni | |
| kurcki | |
| liber | |
| minutus | |
| novus | |
| vacillans | 
References based on distribution
- Bergström et al., 2004a Diabasbrottet quarry, Sweden Lower Ordovician
- Kaljo, 1974 Adze 6 borehole Lower Ordovician