Phacopida

Pärnaste, H. 2012. Suurte silmadega väike mereelukas Telephina. Eesti Loodus , 6-7, 20-23.

Hoel, O. A. 2009. The post-cephalic morphology of the middle Ordovician trilobite Prionocheilus narinosus from the central Oslo Region, Norway. Norsk Geologisk Tidsskrift 89, 3, 247-249.

Pärnaste, H. 2008. Xylabion and related genera. Advances in trilobite research, pp. 307-312.

Pärnaste, H. 2006. The earliest encrinurid trilobites from the East Baltic and their taxonomic interest. Palaeontology 49, 1, 155-170. DOI:10.1111/j.1475-4983.2005.00535.x

Pärnaste, H. 2006. The Early Ordovician trilobite distribution and zonation of the East Baltic. Proceedings of the Estonian Academy of Sciences. Geology 55, 2, 109-127.

Pärnaste, H. 2004. Revision of the Ordovician cheirurid trilobite genus Reraspis with the description of the earliest representative. Proceedings of the Estonian Academy of Sciences. Geology 53, 2, 125-138.

Pärnaste, H. 2003. The Lower Ordovician trilobite Krattaspis: the earliest cyrtometopinid (Cheiruridae) from the Arenig of the east Baltic. Special Papers in Palaeontology 70, 241-257.

Rõõmusoks, A. 2000. The new trilobite genus Valdariops from the Harju Series (Upper Ordovician) of Estonia. Proceedings of the Estonian Academy of Sciences. Geology 49, 1, 28-43.

Rõõmusoks, A. 1998. Trilobites of the genus Toxochasmops from the Ordovician of Estonia. Proceedings of the Estonian Academy of Sciences. Geology 47, 3, 173-194.

Raukas, A., Teedumäe, A. (eds) 1997. Geology and Mineral Resources of Estonia.

Barwick, R. E., Campbell, K. S. W., Mark-Kurik, E. 1997. Tarachomylax: A new early Devonian dipnoan from Severnaya Zemlya, and its place in the evolution of the Dipnoi. Geobios 30, 1, 45-73. DOI:10.1016/S0016-6995(97)80257-4

Edgecombe, G. D., Ramsköld, L. 1996. The "Encrinurus" variolaris plexus (Trilobita, Silurian): relationships of Llandovery species. Geobios 29, 2, 209-233. DOI:10.1016/S0016-6995(96)80045-3

Ramsköld, L., Edgecombe, G. D. 1994. Revision of the Silurian encrinurine trilobite Wallacia Lamont 1978, with species from Gotland and Canada. Paläontologische Zeitschrift 68, 1/2, 89-115. DOI:10.1007/BF02989435

Jaanusson, V., Ramsköld, L. 1993. Pterygometopine trilobites from the Ordovician of Baltoscandia. Palaeontology 36, 4, 743-769.

Krueger, H.-H. 1992. Atractocybeloides, eine kleinwuchsige Trilobitengattung aus baltoskandischen Geschieben und ihrem Anstehenden. Mitteilungen aus dem Museum für Naturkunde der Humboldt-Universität in Berlin , , 105-120.

Kielan-Jaworowska, Z., Bergström, J. Ahlberg, P. 1991. Cheirurina (trilobita) from the Upper Ordovician of Västergötland and other regions of Sweden. GFF 113, 2-3, 219-244. DOI:10.1080/11035899109453857

Rõõmusoks, A. 1991. On the stratigraphy and fauna of the boundary beds between the Pirgu and Porkuni stages in North Estonia. Acta et Commentationes Universitatis Tartuensis 934, XII, 23-42. Eesti Ordoviitsiumi paleontoloogia ja stratigraafia, pp. 23-42.

Männil, Reet 1990. Silurian trilobites. Field Meeting Estonia 1990. An Excursion Guidebook. Eds: Kaljo, D. & Nestor, H., pp. 74-76.

Rõõmusoks, A. 1989. Über die Divergenz der Leptaenidae (Brachiopoda) in der Viru-und Harju-zeit in Baltoscandia. Proceedings of the Academy of Sciences of the Estonian SSR. Geology 38, 3, 112-117.

Männil, Ralf 1987. Explanatory notes to the stratigraphical chemes of the Ordovician deposits. Resolutions of the interdepartmental stratigraphical conference on the East European Platform in 1984, with regional stratigraphical schemes, pp. 17-57.

Männil, Reet 1987. New phacopid trilobites from the Upper Silurian of the East Baltic. Proceedings of the Academy of Sciences of the Estonian SSR. Geology 36, 3, 113-120.

Ramsköld, L. 1986. Silurian encrinurid trilobites from Gotland and Dalarna, Sweden. Palaeontology 29, 3, 527-575.

Rõõmusoks, A. 1986. Oculichasmops - a new genus of the trilobite subfamily Chasmopinae. Proceedings of the Academy of Sciences of the Estonian SSR. Geology 35, 4, 156-159.

Männil, Reet 1983. Upper Silurian Calymenidae (Trilobita) of the East Baltic. Lower Paleozoic paleontology of Baltics and Podolia. Ed: Klaamann, E., pp. 72-100.

Männil, Reet 1982. Trilobite communities (Wenlock, East Baltic). Communities and biozones in the Baltic Silurian Communities and biozones in the Baltic Silurian, pp. 51-62.

Bassett, M. G., Cocks, L. R. M., Holland, C. H., Ingham, J. K., Lawson, J. D., Rickards, R. B., Temple, J. T. 1979. Field meeting, Great Britain March 30- April 11, 1979.

Männil, Reet 1978. Wenlockian trilobites of the Encrinurus punctatus species-group of the East Baltic. Proceedings of the Academy of Sciences of the Estonian SSR. Geology 27, 3, 108-113.

Männil, Reet 1977. Some new Llandoverian encrinurid trilobites of the East Baltic area. Proceedings of the Academy of Sciences of the Estonian SSR. Chemistry and Geology 26, 1, 46-56.

Männil, Reet 1977. East Baltic Lower Silurian Calymenidae (Trilobita). Facies and fauna of the Baltic Silurian, pp. 240-258.

Männil, Reet 1970. Phacopid trilobites of the Upper Llandoverian of Estonia. Proceedings of the Academy of Sciences of the Estonian SSR. Chemistry and Geology 19, 4, 342-349.

Männil, Reet 1970. Estonian Lower and Middle Llandoverian trilobites of the genus Acernaspis. Proceedings of the Academy of Sciences of the Estonian SSR. Chemistry and Geology 19, 2, 156-165.

Männil, Reet 1968. Encrinurus Schmidti sp. n. (Trilobita) from the Llandoverian of Estonia. Proceedings of the Academy of Sciences of the Estonian SSR. Chemistry and Geology 17, 3, 273-283.

Tripp, R. P. 1962. The Silurian trilobite Encrinurus punctatus (Wahlenberg) and allied species. Palaeontology 5, 3, 460-477.

Nikolaisen, F. 1961. The Middle Ordovician of the Oslo Region, Norway: 7. Trilobites of the suborder Cheirurina. Norsk Geologisk Tidsskrift 41, 2-4, 279-310.

Männil, Ralf 1958. New Cryptostomatous Bryozoans from the Ordovician of Estonia. Proceedings of the Academy of Sciences of the Estonian SSR. Ser. Tech. and Phys.-Mat. Sciences 7, 4, 330-347.

Männil, Ralf 1958. Trilobites of the families Cheiruridae and Encrinuridae from Estonia. ENSV TA Geoloogia Instituudi uurimused III, 165-212. Eesti NSV Teaduste Akadeemia Geoloogia Instituudi Uurimused III, pp. 165-212.

Männil, Ralf 1957. Estoniops - A New Genus of Phacopidae (Trilobita). Proceedings of the Academy of Sciences of the Estonian SSR. Ser. Tech. and Phys.-Mat. Sciences 6, 4, 385-388.

Rõõmusoks, A. 1953. New data on the Ordovician trilobite genus Chasmops of Estonia. Loodusuurijate Seltsi Juubelikoguteos, pp. 397-413.

Rosenstein, E. 1941. Die Encrinurus-Arten des estländichen Silurs. Tartu Ülikooli juures oleva Loodusuurijate Seltsi Aruanded 47, 1-2, 49-80.

Siegfried, P. 1939. Zur Kenntnis estländischer Trilobiten Mit einem Zusatz: Über Antennula-Zapfen und das Hyposyom von A Öpik. Tartu Ülikooli juures oleva Loodusuurijate Seltsi Aruanded 44, 1-2, 159-172.

Öpik, A. 1937. Trilobiten aus Estland. Tartu Ülikooli Geoloogia Instituudi Toimetused 52, 1-163.

Öpik, A. 1937. Ostracoda from the Ordovician Uhaku and Kukruse formations of Estonia. Tartu Ülikooli Geoloogia Instituudi Toimetused 50, 1-58.

Öpik, A. 1930. Beiträge zur Kenntnis der Kukruse-(C2-C3-)Stufe in Eesti. IV. Tartu Ülikooli Geoloogia Instituudi Toimetused 24, 1-34.

Öpik, A. 1928. Beiträge zur Kenntnis der Kukruse-(C2-C3-) Stufe in Eesti. III. Tartu Ülikooli Geoloogia Instituudi Toimetused 12, 1-42.

Öpik, A. 1927. Beiträge zur Kenntnis der Kukruse-(C2-) Stufe in Eesti. II. Tartu Ülikooli Geoloogia Instituudi Toimetused 10, 1-35.

Öpik, A. 1925. Beiträge zur Kenntnis der Kukruse-(C2-) Stufe in Eesti. I. Tartu Ülikooli Geoloogia Instituudi Toimetused 4, 1-18.

Schmidt, Fr. 1907. Revision der ostbaltischen silurischen Trilobiten. Abt. VI. Allgemeine Übersicht mit Nachträgen und Verbesserungen. Mémoires de l´Académie Impériale des Sciences de St.-Petersbourg 20, 8, 1-104.

Schmidt, Fr. 1894. Revision der ostbaltischen silurischen Trilobiten. Abt. IV. Calymmeniden, Proetiden, Bronteiden, Harpediden, Trinucleiden, Remopleuriden und Agnostiden. Mémoires de l´Académie Impériale des Sciences de St.-Petersbourg 42, 5, 1-93.

Schmidt, Fr. 1881. Revision der ostbaltischen silurischen Trilobiten nebst geognostischer Übersicht des ostbaltischen Silurgebiets. Abt. I. Phacopiden, Cheiruriden und Encrinuriden. Mémoires de l´Académie Impériale des Sciences de St.-Petersbourg 30, 1, 1-237.

Nieszkowski, J. 1859. Zusätze zur Monographie der Trilobiten der Ostseeprovinzen, nebst der Beschreibung einiger neuen obersilurischen Crustaceen. Archiv für die Naturkunde Liv-, Ehst- und Kurlands 2, 2, 345-384.

Schmidt, Fr. 1858. Untersuchungen über die Silurische Formation von Ehstland, Nord-Livland und Oesel. Archiv für die Naturkunde Liv-, Ehst- und Kurlands 2, 1, 1-249.

Nieszkowski, J. 1857. Versuch einer Monographie der in den silurischen Schichten der Ostseeprovinzen vorkommenden Trilobiten. Archiv für die Naturkunde Liv-, Ehst- und Kurlands 1, 3, 517-626.

Phacopida Salter, 1864