Subfamily

Sigmoopsinae Henningsmoen, 1953

Selection of related publications
Meidla, T. 1996. Late Ordovician Ostracodes of Estonia. Fossilia Baltica 2. pp. 1-222. Tartu University Press.
Nõlvak, J., Meidla, T., Uutela, A. 1995. Microfossils in the Ordovician erratic boulders from Southwestern Finland. Bulletin of the Geological Society of Finland 67, 2, 3-26. DOI:10.17741/bgsf/67.2.001
Sidaravičiene, N. 1992. Ordovician ostracods of Lithuania. pp. 1-252. LitNIIGRI.
Maletz, J. 1992. The proximal development in Anisograptis (Graptoloidea, Anisograptidae). Paläontologische Zeitschrift 66, 3-4, 297-309. DOI:10.1007/BF02985821
Meidla, T. 1986. Neue Ostrakoden aus dem Ordovizium des Baltikums. Eesti NSV Teaduste Akadeemia Toimetised. Geoloogia / Известия Академии наук Эстонской ССР. Геология 35, 1, 10-19. DOI:10.3176/geol.1986.1.02
Schallreuter, R. 1977. Taxonomie und Phylogenie der paläozoischen Ostrakodengattung Semibolbina Jordan. Paläontologische Zeitschrift 51, 1-2, 32-51. DOI:10.1007/BF02986601
Nõlvak, J. 1972. A characterization of the boundary beds of the Kukruse and Idavere stages in the Lipu boring. Loodusuurijate Seltsi Aastaraamat, pp. 39-59. Loodusuurijate Selts.
Sarv, L. I. 1962. Ostracods from the Porkuni stage and Llandovery of Estonia. ENSV TA Geoloogia Instituudi Uurimused IX, 95-141.
Sarv, L. 1959. Ordovician ostracodes in the Estonian S.S.R.. ENSV TA Geoloogia Instituudi Uurimused IV, 1-210.
Jaanusson, V. 1957. Middle Ordovician Ostracodes of Central and Southern Sweden. Bulletin of the Geological Institutions of the University of Uppsala 37, 17, 173-442.
Neckaja, A. I. 1953. Tetradellidy ordovika Pribaltiki i ih stratigraficheskoe znachenie. Trudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI) 309-363. Gostoptehizdat.
Thorslund, P. 1940. On the Chasmops series of Jämtland and Södermanland (Tvären). Sveriges Geologiska Undersökning 1-191.
Öpik, A. 1937. Ostracoda from the Ordovician Uhaku and Kukruse formations of Estonia. Tartu Ülikooli Geoloogia Instituudi Toimetused 50, 1-58.
List of species
1. Braderupia asymmetrica (Neckaja, 1958) | Kukruse StageKeila Stage
4. Concavhithis nebeni (Schallreuter, 1975) | Rakvere StagePirgu Stage
5. Kiesowia decima Sarv, 1962 | Porkuni Stage
6. Kiesowia dissecta (Krause, 1892) | Nabala StageRaikküla Stage
7. Kiesowia mamillosa (Krause, 1892) | Vormsi StageJuuru Stage
9. Kiesowia regalis (Neckaja, 1952) | Oandu StagePirgu Stage
11. Pseudotallinnella scopulosa Sarv, 1959 | Jõhvi SubstageKeila Stage
13. Severobolbina elliptica (Steusloff, 1895) | Idavere SubstageKeila Stage
14. Severobolbina kuckersiana (Bonnema, 1909) | Uhaku StageKukruse Stage
15. Severobolbina severa (Sarv, 1959) | Kukruse StageHaljala Stage
16. Seviculina oanduensis (Sarv, 1956) | Oandu StageNabala Stage
17. Seviculina reticulata Meidla, 1986 | Rakvere StagePirgu Stage
18. Sigmoopsis (Sigmoopsis) cornuta (Krause, 1897) | Kukruse StageOandu Stage
20. Sigmoopsis (Sigmoopsis) obliquejugata (Schmidt, 1858) | Uhaku StageIdavere Substage