Species
Quadrithyris trio (Barrande, 1848)
Synonymy list
1847 Spirifer trio — Barrande , pp. 118
1959 Delthyris (Quadrithyris) trio (Barrande, 1848) — Havlicek , pp. 120-122, fig. pl. 24: 5, 7
Klassificering
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Rhynchonellata |
| Order | Spiriferida |
| Suborder | Delthyridina |
| Superfamily | Reticularioidae |
| Family | Xenomartiniidae |
| Subfamily | Quadrithyridinae |
| Genus | Quadrithyris |
| Species | sinuata |
| trio |