Subgenus

Tetrada (Tallinnopsis) Sarv, 1959

Selection of related publications

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

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.

List of species

1. Tetrada (Tallinnopsis) excisa Sidaravichiene, 1971 | Idavere Substage→Oandu Stage

2. Tetrada (Tallinnopsis) gudensis Sidaravičiene, 1992 | Keila Stage

3. Tetrada (Tallinnopsis) porosicalkeri Sidaravičiene, 1992 | Kukruse Stage→Jõhvi Substage

4. Tetrada (Tallinnopsis) ramigalensis Sidaravičiene, 1992 | Uhaku Stage→Idavere Substage

5. Tetrada (Tallinnopsis) vaiguvenis Sidaravičiene, 1992 | Idavere Substage→Oandu Stage

6. Tetrada (Tallinnopsis) vievensis Sidaravičiene, 1992 | Kukruse Stage→Jõhvi Substage

Classification

Organism group	Biota
Kingdom	Animalia
Phylum	Arthropoda
Subphylum	Crustacea
Class	Ostracoda
Order	Beyrichicopida
Suborder	Palaeocopa
Family	Ctenonotellidae
Subfamily	Tallinnellinae
Genus	Tetrada
Subgenus	(Neotsitrella)
	(Perplana)
	(Tallinnopsis)
Species	excisa
	gudensis
	porosicalkeri
	ramigalensis
	vaiguvenis
	vievensis
Subgenus	(Tetrada)
Species	hibyi
	ventroconcava
Subspecies	troppenzorum