Species
Leptaena (Leptaena) spumifera Öpik, 1930
Type specimen data
holotype: TUG TUG 1054-149, Kohtla opencast (Kohtla) , Kukruse Stage (Kukruse Stage, Kiviõli Mb.; Sandbian) 
Synonymy list
1930     Leptaena spumifera sp. nov. — Öpik , pp. 180, fig. 12: 149
1930     Leptaena trigonalis Schmidt — Öpik , fig. 13: 151
2004     Kurnamena spumifera (Öpik, 1930a) — Rõõmusoks , pp. 56-57, fig. 20: 2;  23: 10; 24: 1-5
Selection of related publications
Öpik, A. 1930. Brachiopoda Protremata der estländischen ordovizischen Kukruse-Stufe.  Tartu Ülikooli Geoloogia Instituudi Toimetused   20,      1-261.
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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) | 
| Species | 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 | 
References based on distribution
- Öpik, 1930a Kohtla Kukruse Stage