Genus
Parapetalolithus Koren´ et Rickards, 1996
Selection of related publications
Maletz, J., Ahlberg, P., Suyarkova, A., Loydell, D. K. 2014. Silurian graptolite biostratigraphy of the Röstånga-1 drill core, Scania – a standard for southern Scandinavia.  GFF   136,   1,   175-178. DOI:10.1080/11035897.2013.865665
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., 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
Ulst, R. Ž., Gailite, L. K., Springis, T. K. 1984. Lithostratigraphic subdivision of the subsurface Ordovician rocks of the Jelgeva Depression.  Stratigrafiâ drevnepaleozojskih otloženij Pribaltiki, pp. 63-76.   Eesti NSV Teaduste Akadeemia. 
Paškevičius, J. 1979. Biostratigraphy and Graptolites of the Lithuanian Silurian. pp. 1-267.  Mokslas. 
Gailite, L. K., Rybnikova, M. V., Ulst, R. Ž. 1967. Stratigrafiâ, fauna i usloviâ obrazovaniâ silurijskih porod Srednej Pribaltiki. pp. 1-304.  Zinatne. 
List of species
1. Parapetalolithus altissimus (Elles et Wood, 1908) | Llandovery
4. Parapetalolithus kunkojensis (Paškevičius, 1979) | Llandovery
5. Parapetalolithus ovatus (Barrande, 1850) | Llandovery
7. Parapetalolithus schaueri (Loydell, 1991) | Silurian
8. Parapetalolithus tenuis (Barrande, 1850) | Llandovery
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Hemichordata | 
| Class | Pterobranchia | 
| Subclass | Graptolithina | 
| Order | Graptoloidea | 
| Suborder | Axonophora | 
| Superfamily | Retiolitoidea | 
| Family | Retiolitidae | 
| Subfamily | Petalolithinae | 
| Genus | Agetograptus | 
| Cephalograptus | |
| Comograptus | |
| Dimorphograptoides | |
| Dischidograptus | |
| Dittograptus | |
| Hercograptus | |
| Parapetalolithus | |
| Species | altissimus | 
| elongatus | |
| hispanicus | |
| kunkojensis | |
| ovatus | |
| palmeus | |
| schaueri | |
| tenuis | |
| Genus | Petalograptus | 
| Petalolithus | |
| Pseudorthograptus | |
| Rivagraptus | |
| Spinadiplograptus | |
| Victorograptus |