Species
Plaesiomys anticostiensis Shaler, 1865
Synonymy list
1862 Orthis porcats sp. nov. — Billings (non M´Coy, 1846) , pp. 135, fig. 111
1865 Orthis anticostiensis sp. nov. — Shaler , pp. 66
1928 Dinorthis anticostiensis Shaler, 1865 — Twenhofel , pp. 183, fig. 18: 15, 16
1932 Plaesiomys anticostiensis (Shales) — Schuchert et Cooper , pp. 94
1981 Plaesiomys anticostiensis (Shaler, 1865) — Bolton , pp. 50, fig. 3: 7
2008 Plaesiomys anticostiensis (Shaler, 1865) — Jin et Zhan , pp. 18-21, fig. 4: 1-13; 5: 1-23; 6: 1-16; 7: 1-15; 8: 1-11; text-
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Rhynchonellata |
| Order | Orthida |
| Suborder | Orthidina |
| Superfamily | Orthoidea |
| Family | Plaesiomyidae |
| Subfamily | Plaesiomyinae |
| Genus | Plaesiomys |
| Species | anticostiensis |
| saxbyana | |
| solaris | |
| subquadrata |