liik
Leptaena (Leptaena) altera Rybnikova, 1966
Sünonüümika
1966     Leptaena altera sp. nov. — Rybnikova , lk. 78, joon. pl. 1: 4-6
1967     Leptagonia altera (Rybnikova, 1966) — Rybnikova , lk. 193, joon. pl. 18: 4-6
2004     Leptaena altera Rybnikova, 1966 — Musteikis et Cocks , joon. figs 4H-O
2011     Leptaena (Leptaena) altera Rybnikova, 1966 — Rubel , lk. 19-20, joon. pl. 2: 1-9
Valik taksonit käsitlevast teaduskirjandusest
Rubel, M. 2011. Silurian brachiopods Dictyonellida, Strophomenida, Productida, Orthotetida, Protorthida and Orthida from Estonia.  Fossilia Baltica 4, pp. 1-133.   Tartu Ülikooli geoloogia instituut. 
Rybnikova, M. V. 1966. Brachiopods Strophomenida of the Upper Silurian deposits of Latvia.  Palaeontology and stratigraphy of the Baltic and the Byelorussia. Number I, pp. 75-95.   Mintis. 
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Klassifikatsioon
| organismirühm | Biota | 
| riik | Animalia | 
| hõimkond | Brachiopoda | 
| alamhõimkond | Rhynchonelliformea | 
| klass | Strophomenata | 
| selts | Strophomenida | 
| ülemsugukond | Strophomenoidea | 
| sugukond | Rafinesquinidae | 
| alamsugukond | Leptaeninae | 
| perekond | Leptaena | 
| alamperekond | (Leptaena) | 
| liik | bergstroemi | 
| acuta | |
| acuteplicata | |
| altera | |
| crassorugata | |
| depressa | |
| ennessbe | |
| fluviatilis | |
| friedrichi | |
| haverfordensis | |
| inaequalis | |
| indigena | |
| ingrica | |
| laterorugata | |
| palmrei | |
| paucirugata | |
| pertenuis | |
| planitia | |
| purpurea | |
| rhomboidalis | |
| rugosa | |
| rugosoides | |
| sperion | |
| spumifera | |
| tarwanpensis | |
| taxilla | |
| undosa | 
Levik kirjandusandmetel
- Rubel, 2011 Kalvarija puurauk 732.8 - 832.6 Jaani lade
 - Rubel, 2011 Ohesaare puurauk 271.12 - 312.57 Jaani lade
 - Rybnikova, 1966 Ezere 9 puurauk 1081.3 - 1081.3 Ludlow
 - Rybnikova, 1966 Akniste puurauk 556 - 562 Ludlow