Species
Leptaena (Leptaena) sperion Bassett, 1977
Synonyymit
1977 Leptaena sperion n. sp — Bassett , pp. 123, fig. 33_1-3
2005 Leptaena sperion Bassett, 1977 — Hoel , pp. 268, fig. 3A-R, 10, 11B
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Luokittelu
| 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 | |
| tarwanpesis | |
| taxilla | |
| undosa |