Species
Tetrada (Tetrada) ovalis (Sarv, 1959)
Type specimen data
Synonymy list
1959     Tallinnopsis ovalis (Oraspõld, in coll.) — Sarv , pp. 70-71, fig. 13:16-21
1960     Tallinnopsis ovalis Sarv, 1959 — Oraspõld , pp. 233
1969     Tetrada ovalis (Sarv, 1959) — Schallreuter , pp. 354
1973     Tallinnopsis ovalis Orasp. — Gailite , pp. 67-68
1976     Tallinnopsis ovalis Sarv, 1959 — Sidaravičiene , pp. 50
1976     Tallinnopsis ovalis Sarv — Jaanusson , pp. 317
1976     Tetrada ovalis (Sarv, 1959) — Schallreuter , pp. 165
1979     Tetrada ovalis (Sarv, 1959) — Ivanova , pp. 142, 146-147, fig. 12:3
1979     Tallinnopsis ovalis  — Sidaravičiene , pp. 134-135, 137
1992     Tetrada (Tetrada) ovalis (Sarv, 1959) — Sidaravičiene , pp. 113-114, fig. 29:11
Selection of related publications
Sarv, L. 1959. Ordovician ostracodes in the Estonian S.S.R..  ENSV TA Geoloogia Instituudi Uurimused   IV,      1-210.
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Arthropoda | 
| Subphylum | Crustacea | 
| Superclass | Oligostraca | 
| Class | Ostracoda | 
| Subclass | Podocopa | 
| Order | Palaeocopida | 
| Suborder | Beyrichicopina | 
| Palaeocopa | |
| Family | Ctenonotellidae | 
| Genus | Tetrada | 
| Subgenus | (Tetrada) | 
| Species | grandis | 
| harpa | |
| krausei | |
| memorabilis | |
| neckajae | |
| ovalis | |
| pseudoiewica | |
| variabilis | 
References based on distribution
- Sidaravičiene, 1992 Sutkai 87 borehole 979.2 - 984.9
- Sidaravičiene, 1992 Vangishki 205 borehole 425 - 449.2
- Sidaravičiene, 1992 Drukshiai 324 borehole 440.4 - 443.8
- Sarv, L., 1959 Lehtmetsa quarry (Saaremaa)
- Sarv, L., 1959 Pääsküla
- Sarv, L., 1959 Rakvere