Species
Pahlenella trigonula (Eichwald, 1840)
Synonymy list
1840     Orthis trigonula m. — Eichwald , pp. 171-172
1840     Orthis trigonula m. — Eichwald , pp. 148
1856     Orthis trigonula — Eichwald , pp. 434
1857     Orthis trigonula — Eichwald , pp. 101
1860     Orthis trigonula m. — Eichwald , pp. 833, fig. 33:22a-c
1960     Pahlenella trigonula (Eichwald, 1840)  — Alichova , fig. 19: 8-9
2000     Pahlenella trigonula (von Eichwald, 1840) — Rubel et Wright , pp. 704, fig. 505, 1a-d
Selection of related publications
Eichwald, E. 1860. Lethaea Rossica ou Paléontologie de la Russie. Premier volume. Ancienne Période en deux sections. pp. XIX+1–1657.  E. Schweizerbart.  DOI:10.5962/bhl.title.52391
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Brachiopoda | 
| Subphylum | Rhynchonelliformea | 
| Class | Strophomenata | 
| Order | Billingsellida | 
| Suborder | Clitambonitidina | 
| Superfamily | Clitambonitoidea | 
| Family | Clitambonitidae | 
| Genus | Pahlenella | 
| Species | trigonula | 
References based on distribution
- Eichwald, 1860a [Duplicate record of 16374] Pulkovo