Genus
Leiocyamus Martinsson, 1956
Selection of related publications
Sarv, L. I. 1968. Ostracode families Craspedobolbinidae, Beyrichiidae and Primitiopsidae in the Silurian of Estonia. pp. 1-103.  Valgus. 
Martinsson, A. 1956. Ontogeny and Development of Dimorphism in some Silurian Ostracodes.  The Bulletin of the Geological Institutions of Uppsala   37,   14,   1-42.
List of species
2. Leiocyamus consimilis Pranskevichius, 1972 | Ludlow
3. Leiocyamus semirotundus Neckaja, 1973 | Ludlow
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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 | Primitiopsacea | 
| Family | Primitiopsididae | 
| Subfamily | Leiocyaminae | 
| Genus | Allertemmysa | 
| Amygdalella | |
| Asymmetrella | |
| Leiocyamus | |
| Species | apicatus | 
| complanatus | |
| consimilis | |
| semirotundus | |
| Genus | Pliciwemuna | 
| Semilimbinaria | |
| Temmysa |