Protorthida is an extinct order of Rhynchonellate brachiopods containing the taxa:[1]
- Superfamily Protorthoidea
- Family Protorthidae
- Family Arctohedridae
- Family Leioriidae
- Superfamily Skenidioidea
- Family Skenidiidae
| Protorthida | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Brachiopoda |
| Class: | Rhynchonellata |
| Order: | †Protorthida |
| Families | |
| |
References
edit- ^ Williams, Alwyn; Brunton, C.H.C.; Carlson, S.J.; et al. (1997–2007). Kaesler, Roger L.; Selden, Paul (eds.). Part H, Brachiopoda (Revised). Treatise on Invertebrate Paleontology. Boulder, Colorado; Lawrence, Kansas: Geological Society of America; University of Kansas.
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