Orthoceratia

Aubrechtová, M., Meidla, T. 2020. Lituitid cephalopods from the upper Darriwilian and basal Sandbian (Middle–Upper Ordovician) of Estonia. GFF 142, 4, 267-296. DOI:10.1080/11035897.2020.1762723

Kröger, B., Aubrechtová, M. 2019. The cephalopods of the Kullsberg Limestone Formation, Upper Ordovician, central Sweden and the effects of reef diversification on cephalopod diversity. Journal of Systematic Palaeontology 17, 12, 961-995. DOI:10.1080/14772019.2018.1491899

Pohle, A., Klug, C., Toom, U., Kröger, B. 2019. Conch structures, soft-tissue imprints and taphonomy of the Middle Ordovician cephalopod Tragoceras falcatum from Estonia. Fossil Imprint 75, 1, 70-78. DOI:10.2478/if-2019-0006

Kröger, B., Aubrechtová, M. 2018. Cephalopods from reef limestone of the Vasalemma Formation, northern Estonia (latest Sandbian, Upper Ordovician) and the establishment of a local warm-water fauna. Journal of Systematic Palaeontology 16, 10, 799-839. DOI:10.1080/14772019.2017.1347212

Manda, Š., Turek, V. 2015. Colour patterns on Silurian orthocerid and pseudorthocerid Conchs from Gotland - palaeoecological implications. Estonian Journal of Earth Sciences 64, 1, 74-79. DOI:10.3176/earth.2015.13

Kröger, B. 2013. The cephalopods of the Boda Limestone, Late Ordovician, of Dalarna, Sweden. European Journal of Taxonomy 41, 41, 1-110. DOI:10.5852/ejt.2013.41

Kröger, B. 2012. The “Vaginaten”: the dominant cephalopods of the Baltoscandian Mid Ordovician endocerid limestone. GFF 134, 2, 115-132. DOI:10.1080/11035897.2012.691897

Kröger, B., Ebbestad, J. O. R., Högström, A. E. S., Frisk, Ǻ. M. 2011. Mass concentration of Hirnantian cephalopods from the Siljan District, Sweden; taxonomy, palaeoecology and palaeobiogeographic relationships. Fossil Record 14, 1, 35-53. DOI:10.1002/mmng.201000014

Kröger, B. 2007. Concentrations of juvenile and small adult cephalopods in the Hirnantian cherts (Late Ordovician) of Porkuni, Estonia. Acta Palaeontologica Polonica 52, 3, 591-608.

Kröger, B., Isakar, M. 2006. Revision of annulated orthoceridan cephalopods of the Baltoscandic Ordovician. Fossil Record 9, 1, 137-163. DOI:10.1002/mmng.200600005

Kröger, B. 2004. Revision of Middle Ordovician orthoceratacean nautiloids from Baltoscandia. Acta Palaeontologica Polonica 49, 1, 57-74.

Mutvei, H. 2002. Connecting ring structure and its significance for classification of the orthoceratid cephalopods. Acta Palaeontologica Polonica 47, 1, 157-168.

King, A. H. 1999. A Review of Volkhovian and Kundan (Arenig-Llanvirn) Nautiloids from Sweden. Advancing Research on Living and Fossil Cephalopods, pp. 137-159. DOI:10.1007/978-1-4615-4837-9_11

Mutvei, H. 1997. Siphuncular structure in Ordovician endocerid cephalopods. Acta Palaeontologica Polonica 42, 3, 375-390.

Kiselev, G. N. 1991. Revizia pozdneordovikskikh i siluriskikh tsefalopod Pribaltiki iz kollektsii E. I. Eichwalda. Bulletin of Moscow Society of Naturalists. Geology 66, 4, 85-101.

Rõõmusoks, A. 1970. Stratigraphy of the Viruan Series (Middle Ordovician) in Northern Estonia, I.

Balashov, Z. G. 1968. Èndoceratoidei ordovika SSSR.

Saladžius, V. J. 1966. Mollusk fauna of the Silurian deposits of the south of the East Baltic territory. Palaeontology and stratigraphy of the Baltic and the Byelorussia. Number I (VI), pp. 31-73.

Balashov, Z. G. 1964. O stroenii i okraske stenki rakoviny nekotoryh ordovikskih endoceratoidej Pribaltiki. Voprosy paleontologii IV, 106-110. Voprosy paleontologi, IV, pp. 106-110.

Sweet, W. C. 1958. The Middle Ordovician of the Oslo Region, Norway: 10. Nautiloid Cephalopods. Norsk Geologisk Tidsskrift 38, 1, 1-176.

Stumbur, H. A. 1956. On the nautiloids of Kohila Subseries (Upper Ordovician of East Baltic). Tartu Riikliku Ülikooli Toimetised 42, 176-185.

Balashov, Z. G. 1956. O sistematicheskom polozhenii i stratigraficheskom znachenii roda Orthoceras. Ežegodnik Vsesoûznogo Paleontologičeskogo Obŝestva XV, 223-247.

Balashov, Z. G. 1955. Semejstvo Cochlioceratidae nom. nov.. Voprosy paleontologii II, 55-60.

Stumbur, H. 1955. Eesti NSV ülem-ordoviitsiumi nautiloiididest [Diplomitöö].

Alichova, T. N., Balashova, E. A., Balashov, Z. G. 1954. Polevoj atlas harakternyh kompleksov fauny otloženij ordovika i gotlandiâ ûžnoj časti Litovskoj SSR.

Strand, T. 1934. The Upper Ordovician Cephalopods of the Oslo Area. Norsk Geologisk Tidsskrift 14, 1-117.

Foerste, A. F. 1932. The cephalopod genera Cyrtendoceras and Oelandoceras. The Ohio Journal of Science 32, 3, 163-172.

Teichert, C. 1930. Der erste europäische Vertreter der Gattung Ischyrinia Billings (Eucrust. Nodostr.) in der Lyckholm-Stufe von Estland. Paläontologische Zeitschrift 12, 2, 130-134. DOI:10.1007/BF03044505

Teichert, C. 1930. Die Cephalopoden-Fauna der Lyckholm-Stufe des Ostbaltikums. Paläontologische Zeitschrift 12, 3/4, 264-312. DOI:10.1007/BF03044452

Öpik, A. 1927. Die Inseln Odensholm und Rogö. Ein Beitrag zur Geologia von NW-Estland. Tartu Ülikooli Geoloogia Instituudi Toimetused 9, 1-69.

Holm, G. 1892. Om tvenne Gyroceras-formigt böjda Endoceras-arter. GFF 14, 2, 125-136. DOI:10.1080/11035899209444299

Foord, A. H. 1887. On “Orthoceras (Endoceras) duplex” Wahlenberg et auct., with descriptions of three new species of Endoceras from the Ordovician of Sweden and Russia contained in the British Museum (Natural History). Annals and Magazine of Natural History 5, 20, 393–403.

Eichwald, E. 1860. Lethaea Rossica ou Paléontologie de la Russie. Premier volume. Ancienne Période en deux sections. DOI:10.5962/bhl.title.52391

Eichwald, E. 1857. Beitrag zur geographischen Verbreitung der fossilen Thiere Russlands. Alte Periode. (Fortsetzung. S. Bulletin 1856. N 4. pag. 555.). Klasse der Cephalopoden. Bulletin of Moscow Society of Naturalists. Geology 30, I, 192-219.

Eichwald, E. 1840. Die Thier- und Pflanzenreste des Alten Rothen Sandsteins und Bergkalks im Novgorod'schen Gouvernment. Bull. Sci. Acad. Imp. Sci. Saint-Petersbourg 7, 6, 7, 78-91.

Orthoceratia Teichert, 1967