Subgenus
Leptaena (Septomena) Rõõmusoks, 1989
Selection of related publications
Rõõmusoks, A. 2004. Ordovician strophomenoid brachiopods of northern Estonia.  Fossilia Baltica 3, pp. 1-151.   Tartu Ülikooli geoloogia Instituut. 
Oraspõld, A. L. 1956. New brachiopods from the Jõhvi, Keila and Vasalemma stages.  ENSV TA Geoloogia Instituudi Uurimused   I,      41-67.
Öpik, A. 1930. Brachiopoda Protremata der estländischen ordovizischen Kukruse-Stufe.  Tartu Ülikooli Geoloogia Instituudi Toimetused   20,      1-261.
Öpik, A. 1930. Brachiopoda Protremata des estländischen ordovizischen Kukruse-Stufe.  Acta et Commentationes Universitatis Tartuensis   XVII,   1,   1-261.
List of species
1. Leptaena (Septomena) alliku (Oraspõld, 1956) | Keila Stage
2. Leptaena (Septomena) crypta Öpik, 1930 | Kukruse Stage
3. Leptaena (Septomena) cryptoides (Oraspõld, 1956) | Keila Stage
4. Leptaena (Septomena) juvenilis Öpik, 1930 | Kukruse Stage
5. Leptaena (Septomena) senecta (Rõõmusoks, 2004) | Lasnamägi Stage
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Brachiopoda | 
| Subphylum | Rhynchonelliformea | 
| Class | Strophomenata | 
| Order | Strophomenida | 
| Superfamily | Strophomenoidea | 
| Family | Rafinesquinidae | 
| Subfamily | Leptaeninae | 
| Genus | Leptaena | 
| Subgenus | (Leptaena) | 
| (Septomena) | |
| Species | alliku | 
| crypta | |
| cryptoides | |
| juvenilis | |
| senecta | |
| Subgenus | (Ygdrasilomena) | 
| Species | bohemica | 
| candata | |
| parvirugata | |
| venzavensis | |
| wesenbergensis |