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. 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.

Sarv, L. I. 1956. New species of ostracodes of the Vasalemma Stage (Upper Ordovician of Estonia). ENSV TA Geoloogia Instituudi Uurimused I, 30-40.

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. Concavhithis nebeni (Schallreuter, 1975) | Rakvere Stage→Pirgu Stage

2. Lomatobolbina mammillata (Thorslund, 1940) | Upper Ordovician

3. Lomatobolbina vonhactorum Schallreuter, 1981 | Upper Ordovician

4. Semibolbina ordoviciana Schallreuter, 1977

5. Severobolbina elliptica (Steusloff, 1895) | Idavere Substage→Keila Stage

6. Severobolbina kuckersiana (Bonnema, 1909) | Uhaku Stage→Kukruse Stage

7. Severobolbina severa (Sarv, 1959) | Kukruse Stage→Haljala Stage

8. Seviculina oanduensis (Sarv, 1956) | Oandu Stage→Nabala Stage

9. Seviculina reticulata Meidla, 1986 | Rakvere Stage→Pirgu Stage

10. Sigmoopsis (Sigmoopsis) cornuta (Krause, 1897) | Kukruse Stage→Oandu Stage

11. Sigmoopsis (Sigmoopsis) kernavensis Sidaravičiene, 1992 | Oandu Stage→Rakvere Stage

12. Sigmoopsis (Sigmoopsis) obliquejugata (Schmidt, 1858) | Uhaku Stage→Idavere Substage

13. Sigmoopsis (Sigmoopsoides) niemeyeri Schallreuter, 1985 | Kunda Stage

14. Sigmoopsis (Sigmoopsoides) perpunctata (Öpik, 1937) | Aseri Stage→Idavere Substage

15. Sigmoopsis (Sigmoopsoides) sigmoopsoides Schallreuter, 1964 | Kukruse Stage→Jõhvi Substage

16. Sigmoopsis granulata (Sarv, 1956) | Oandu Stage→Rakvere Stage

17. Sigmoopsis platyceras (Öpik, 1937) | Uhaku Stage→Kukruse Stage

18. Sigmoopsis rostrata (Krause, 1892) | Kukruse Stage→Nabala Stage

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Arthropoda
Subphylum	Crustacea
Superclass	Oligostraca
Class	Ostracoda
Subclass	Podocopa
Order	Palaeocopida
Suborder	Beyrichicopina
Superfamily	Tetradelloidea
Family	Tetradellidae
Subfamily	Glossomorphitinae
	Perspicillinae
	Sigmoopsinae
Genus	Concavhithis
	Lomatobolbina
	Semibolbina
	Severella
	Severobolbina
	Seviculina
	Sigmoopsis
	Valdarella
Subfamily	Sylthinae
	Tetradellinae
Genus	Disulcina
	Oecematobolbina
	Ordovicia
	Uvonhachtia
	Wehrlina