Species
Tvaerenella granosa (Öpik, 1937)
Current taxon already exists. See initial taxon Tvaerenella tuberculata
 Taxon ID: 5494
Fossil group: Ostracoda
Belongs to: Tvaerenella
Other version of taxon: Tvaerenella tuberculata
Type specimen data
Synonymy list
1937     Primitiella indistincta n. sp. — Öpik , pp. 13, fig. 1:4
1937     Primitiella granosa n. sp. — Öpik , pp. 14, fig. 13:6-9
1956     Primitiella granosa Öpik — Sarv , pp. 51
1957     Tvaerenella granosa (Öpik) — Jaanusson , pp. 296, 299
1983     Tvaerenella granosa (Öpik, 1937) — Schallreuter , pp. 175-176, fig. 4:9; 12:7
1990     Tvaerenella ? granosa (Öpik, 1937) — Schallreuter , pp. 16, fig. 1:5
Selection of related publications
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. 
Sarv, L. 1959. Ordovician ostracodes in the Estonian S.S.R..  ENSV TA Geoloogia Instituudi Uurimused   IV,      1-210.
Öpik, A. 1937. Ostracoda from the Ordovician Uhaku and Kukruse formations of Estonia.  Tartu Ülikooli juures oleva Loodusuurijate Seltsi Aruanded   43,      65-138.
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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 | |
| Superfamily | Hollinacea | 
| Family | Tvaerenellidae | 
| Subfamily | Tvaerenellinae | 
| Genus | Tvaerenella | 
| Species | carinata | 
| expedita | |
| granosa | |
| longa | |
| magna | |
| modesta | |
| plana | |
| postpleta | |
| pulex | |
| stossmeisteri | |
| tuberculata | |
| umbilicata | 
References based on distribution
- Sarv, L., 1959 Kukruse
- Sarv, L., 1959 Küttejõu opencast mine
- Sarv, L., 1959 Harku
- Öpik, 1937i Kohtla-Järve Kukruse Stage