Graptolithina

Orthograptus Lapworth, 1873

Selection of related publications
Maletz, J., Ahlberg, P., Lundberg, F. 2020. Ordovician graptolite biostratigraphy of the Röstånga-2 drill core (Scania, southern Sweden). GFF , 1-17. DOI:10.1080/11035897.2020.1739743
Goldman, D., Nõlvak, J., Maletz, J. 2015. Middle to Late Ordovician graptolite and chitinozoan biostratigraphy of the Kandava-25 drill core in western Latvia. GFF 137, 3, 197-211. DOI:10.1080/11035897.2015.1021375
Pålsson, C. 2002. Upper Ordovician graptolites and biostratigraphy of the Röstånga 1 core, Scania, S. Sweden. DGF 49, 9-23.
Pålsson, C. 2001. Graptolites from the Upper Ordovician Dicranograptus clingani Zone at Järrestad, Scania, southern Sweden. GFF 123, 4, 217-224. DOI:10.1080/11035890101234217
Paškevičius, J. 1979. Biostratigraphy and Graptolites of the Lithuanian Silurian.
Männil, Ralf 1976. Distribution of graptoloids in the Ordovician carbonate rocks of the East Baltic area. Graptolites and Stratigraphy, pp. 105-118.
Tzaj, D. T. 1976. Graptolity srednego ordovika Kazahstana.
Ulst, R. 1975. Graptolites from Upper Ordovician Fjäcka Member of Middle Baltic. The Fauna and Stratigraphy of Paleozoic and Mesozoic of Baltic and Byelorussia, pp. 69-84.
Strachan, I. 1959. Graptolites from the Ludibundus Beds (Middle Ordovician) of Tvären, Sweden. Bulletin of the Geological Institutions of the University of Uppsala 38, 47-68.