Genus

Tetradella Ulrich, 1890

Selection of related publications

Meidla, T. 1996. Late Ordovician Ostracodes of Estonia. Fossilia Baltica 2. pp. 1-222. Tartu University Press.

Sidaravičiene, N. 1992. Ordovician ostracods of Lithuania. pp. 1-252. LitNIIGRI.

Abushik, A., Sarv, L. 1983. Ostracodes from the Moldovo Stage of Podolia. Lower Paleozoic paleontology of Baltics and Podolia, pp. 101-134. ENSV Teaduste Akadeemia.

Sidaravičiene, N. 1971. New ostracoda from Middle and Upper Ordovician of Lithuania. Palaeontology and stratigraphy of the Baltic and Byelorussia. Number III, pp. 23-36. Mintis.

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.

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

Neckaja, A. I. 1952. Novye vidy ostrakod iz otloženij ordovika severo-zapada Russkoj platformy. Trudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI) 217-232. Gostoptexizdat.

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. Tetradella egorowi Neckaja, 1952 | Oandu Stage→Pirgu Stage

2. Tetradella extenuata Sarv, 1962 | Adavere Stage

3. Tetradella iewica Neckaja, 1953 | Idavere Substage→Jõhvi Substage

4. Tetradella intricata Sidaravichiene, 1971 | Pirgu Stage

5. Tetradella pectinata Öpik, 1937 | Kukruse Stage

6. Tetradella plicatula (Krause, 1892) | Pirgu Stage→Porkuni Stage

7. Tetradella pulchra Neckaja, 1952 | Oandu Stage→Pirgu Stage

8. Tetradella separata Sidaravičiene, 1971 | Pirgu Stage→Porkuni Stage

9. Tetradella triloculata Schallreuter, 1978 | Pirgu Stage

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Arthropoda
Subphylum	Crustacea
Class	Ostracoda
Order	Beyrichicopida
Suborder	Palaeocopa
Superfamily	Hollinacea
Family	Tetradellidae
Subfamily	Tetradellinae
Supergenus	Winchellatia
Genus	Ahla
	Ceratopsis
	Consonopsis
	Ctenobolbina
	Dilobella
	Foramenella
	Glossopsis
	Ogmoopsis
	Pleurodella
	Polyceratella
	Tetradella
Species	egorowi
	extenuata
	iewica
	intricata
	pectinata
	plicatula
	pulchra
	separata
	triloculata
Genus	Utalina