Species
Piretopsis (Protallinnella) grewingkii (Bock, 1867)
Synonymy list
1867     Beyrichia Grewingkii — Bock , pp. 592
1889     Beyrichia erratica n. sp. — Krause , pp. 18, fig. 2:6
1935     Tetradella grewingki (Bock) — Öpik , pp. 9, fig. 2:1a-b
1949     Tetradella grewinki (Bock) — Hessland , pp. 342, fig. 9:3, 5-9, 11
1953     Tallinnella grewingki (Bock) — Henningsmoen , pp. 214
1954     Tallinnella grewingkii (Bock, 1867)  — Henningsmoen , pp. 48
1957     Protallinnella grewingki (Bock) — Jaanusson , pp. 353
1959     Protallinnella grewingkii (Bock) — Sarv , pp. 54, fig. 14:1, 3
1976     Protallinnella grewingkii (Bock, 1867) — Sidaravičiene , pp. 50,52
1979     Protallinnella grewingkii (Bock, 1867) — Ivanova , pp. 122-123, fig. 9:6
Selection of related publications
Tolmacheva, T., Egerquist, E., Meidla, T., Tinn, O., Holmer, L. 2003. Faunal composition and dynamics in unconsolidated sediments: a case study from the Middle Ordovician of the East Baltic.  Geological Magazine   140,   1,   31-44. DOI:10.1017/S001675680200701X
Ivanova, V. A. 1979. Ostrakody rannego i srednego ordovika. Podotrâd Hollinomorpha.  Transactions of the Paleontological Institute (PIN)   172,      1-216.  Nauka. 
Sarv, L. 1959. Ordovician ostracodes in the Estonian S.S.R..  ENSV TA Geoloogia Instituudi Uurimused   IV,      1-210.
Öpik, A. 1935. Ostracoda from the lower Ordovician Megalaspis-limestone of Estonia and Russia.  Tartu Ülikooli Geoloogia Instituudi Toimetused   44,      1-12.
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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 | Piretopsis | 
| Subgenus | (Protallinnella) | 
| Species | grewingkii | 
| loennaensis | |
| peridonea | |
| quadricostata | |
| tricostata | 
References based on distribution
- Sidaravičiene, 1992 Kalvarija borehole 968.1 - 972.7
- Sidaravičiene, 1992 Paroveja 9 borehole 889 - 906.4
- Sidaravičiene, 1992 Geluva 99 borehole 1113.6 -
- Sarv, L., 1959 Iru outcrop
- Sarv, L., 1959 Purtse-Kõrgekalda river bank
- Ivanova, 1979 Serebryaniki borehole, Tver Oblast
- Tolmacheva et al., 2003a Putilovo quarry, Leningrad Oblast Volkhov Stage
- Öpik, 1935c Obukhovo outcrop, Leningrad district Volkhov Stage