Graptolithina
Genus

Triograptus Monsen, 1925

Selection of related publications
Ulst, R., Gailite, L., Yakovleva, V. 1982. Ordovik Latvii. pp. 1-294. Zinatne.
Kaljo, D. 1974. On graptolite zones of Tremadoc and Arenig of Pribaltic and Moscow syneclises.Graptolites of the USSR , pp. 31-36. Nauka.
List of species