Family
Dichograptidae Lapworth, 1873
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. L., Kivimägi, E. K. 1976. Zonal stratigraphy of the Estonian Tremadocian.Graptolites and Stratigraphy , pp. 53-63. Academy of Sciences of Estonian SSR. Institut of Geology.
Kaljo, D. 1974. On graptolite zones of Tremadoc and Arenig of Pribaltic and Moscow syneclises.Graptolites of the USSR , pp. 31-36. Nauka.
Obut, A. M. 1960. Correlation of some parts of Estonian Ordovician and Silurian deposits according to graptolites. ENSV TA Geoloogia Instituudi uurimused V, 143-157.
Obut, A. M. 1957. Kassifikaciâ i ukazatel' rodov graptolitov. Ežegodnik Vsesoûznogo Paleontologičeskogo Obŝestva XVI, 11-47. Gosudarstvennoe Nauchno-tehnicheskoe Izdatel'stvao Literatury po Geologi i Ohrane Hedr.
List of species
1. Clonograptus galgebergi (Monsen, 1937) | Ordovician
3. Clonograptus multiplex (Nicholson, 1868) | Lower Ordovician
4. Clonograptus sarmentosus (Moberg, 1892) | Tremadocian
5. Clonograptus tenellus (Linnarsson, 1871) | Lower Ordovician
6. Dichograptus octobrachiatus Hall, 1858 | Lower Ordovician
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Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Order | Graptoloidea |
| Suborder | Dichograptina |
| Family | Dichograptidae |
| Genus | Clonograptus |
| Dichograptus | |
| Herrmannograptus | |
| Holograptus | |
| Loganograptus | |
| Mimograptus | |
| Orthodichograptus | |
| Schizograptus | |
| Triaenograptus | |
| Family | Didymograptidae |
| Pterograptidae | |
| Genus | Calamograptus |