Genus

Sigmoopsis Henningsmoen, 1953

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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

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.

Neckaja, A. I. 1953. Tetradellidy ordovika Pribaltiki i ih stratigraficheskoe znachenie. Trudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI) 309-363. Gostoptehizdat.

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

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

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

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

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

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

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

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

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Arthropoda
Subphylum	Crustacea
Class	Ostracoda
Order	Beyrichicopida
Suborder	Palaeocopa
Superfamily	Hollinacea
Family	Tetradellidae
Subfamily	Sigmoopsinae
Genus	Braderupia
	Carinobolbina
	Concavhithis
	Kiesowia
	Lomatobolbina
	Semibolbina
	Severella
	Severobolbina
	Seviculina
	Sigmoopsis
Subgenus	(Sigmoopsis)
	(Sigmoopsoides)
Species	granulata
	platyceras
	rostrata

References based on distribution

Meidla, 1996a Orjaku borehole 133.7 - 135.6
Meidla, 1996a Viljandi 91 borehole 335.6 -
Meidla, 1996a Laeva 18 borehole 237.7 -
Sidaravičiene, 1992 Kalvarija borehole 903.8 - 913.7
Sidaravičiene, 1992 Geluva 119 borehole 1062.5 - 1067.5
Sidaravičiene, 1992 Vangishki 205 borehole 445.9 - 448.8
Sidaravičiene, 1992 Leliai 284 borehole 475.7 - 481.8
Sidaravičiene, 1992 Paukšciai 192 borehole 557 -
Sidaravičiene, 1992 705.9 - 706.9
Sidaravičiene, 1992 Vangishki 205 borehole 419 - 422.7
Butkunai 241 borehole 644 -
Sidaravičiene, 1992 Kalvarija borehole 920.8 - 933.7
Sidaravičiene, 1992 Geluva 99 borehole 1081.4 -
Sidaravičiene, 1992 Drukshiai 324 borehole 445.7 - 457.2
Sidaravičiene, 1992 Geluva 117 borehole 971.4 -
Sidaravičiene, 1992 Paukšciai 192 borehole 559 - 560.3
Öpik, 1937a Kukruse
Öpik, 1937a Kohtla-Järve Kukruse Stage
Neckaja, 1953 Pihkva
Maletz, 1992b Gotska Sandön borehole 128.46 - 131.8
Maletz, 1992b Fjäcka
Maletz, 1992b Peetri hillock Jõhvi Substage