perekond

Orthograptus Lapworth, 1873

Valik taksonit käsitlevast teaduskirjandusest
Maletz, J., Ahlberg, P., Lundberg, F. 2020. Ordovician graptolite biostratigraphy of the Röstånga-2 drill core (Scania, southern Sweden). GFF 142, 3, 206-222. 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. Bulletin of the Geological Society of Denmark 49, 1, 9-23. DOI:10.37570/bgsd-2003-49-02
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
Ulst, R., Gailite, L., Yakovleva, V. 1982. Ordovik Latvii. pp. 1-294. Zinatne.
Paškevičius, J. 1979. Biostratigraphy and Graptolites of the Lithuanian Silurian. pp. 1-267. Mokslas.
Tzaj, D. T. 1976. Graptolity srednego ordovika Kazahstana. pp. 1-76. Nauka.
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. Mintis.