Protorthida

Extinct order of marine lamp shells

Protorthida
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Brachiopoda
Class:	Rhynchonellata
Order:	†Protorthida
Families
Superfamily Protorthoidea Protorthidae Arctohedridae Leioriidae Superfamily Skenidioidea Skenidiidae

Protorthida is an extinct order of Rhynchonellate brachiopods containing the taxa:^[1]

Superfamily Protorthoidea
- Family Protorthidae
- Family Arctohedridae
- Family Leioriidae
Superfamily Skenidioidea
- Family Skenidiidae

References

^ 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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Brachiopod orders

Linguliformea

Lingulata	†Acrotretida Lingulida †Siphonotretida
†Paterinata	Paterinida

Craniiformea

Craniata	Craniida †Craniopsida †Trimerellida

Rhynchonelliformea

†Chileata	Chileida Dictyonellida
†Kutorginata	Kutorginida
†Obolellata	Naukatida Obolellida
Rhynchonellata	†Athyridida †Atrypida †Orthida †Pentamerida †Protorthida Rhynchonellida †Spiriferida †Spiriferinida Terebratulida Thecideida
†Strophomenata	Billingsellida Orthotetida Productida Strophomenida

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