Genus
Longidorsa Schallreuter, 1985
Selection of related publications
Meidla, T. 1996. Late Ordovician Ostracodes of Estonia. Fossilia Baltica 2. pp. 1-222.  Tartu University Press. 
Gailite, L. K. 1970. Ostracodes from the Kuldiga member of the Upper Ordovician of Latvia.  Palaeontology and stratigraphy of the Baltic and Byelorussia. Number II, pp. 19-31.   Mintis. 
Sarv, L. I. 1962. Ostracods from the Porkuni stage and Llandovery of Estonia.  ENSV TA Geoloogia Instituudi Uurimused   IX,      95-141.
List of species
2. Longidorsa? baltica Meidla, 1996 | Nabala Stage
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Arthropoda | 
| Subphylum | Crustacea | 
| Superclass | Oligostraca | 
| Class | Ostracoda | 
| Subclass | Podocopa | 
| Order | Palaeocopida | 
| Suborder | Beyrichicopina | 
| Leiocopa | |
| Superfamily | Aparchitacea | 
| Family | Aparchitidae | 
| Genus | Aparchites | 
| Baltonotella | |
| Brevidorsa | |
| Estonaceratella | |
| Longidorsa | |
| Species | humilis | 
| rectelloides | |
| Longidorsa? baltica | |
| Longidorsa? porkuniensis | |
| Genus | Macronotella | 
| Neoaparchites | |
| Neoschmidtella | |
| Novoleperditella |