Gl
Glaciarcula Elliott, 1956
- Glaciarcula friellei (Davidson, 1878)
- Glaciarcula spitzbergensis (Davidson, 1852)
Brachiopoda → Rhynchonellata → Terebratulida → Laqueoidea → Laqueidae → Glaciarculinae
Potporodica Glaciarculinae
- Rod: Glaciarcula
Brachiopoda → Rhynchonellata → Terebratulida → Laqueoidea → Laqueidae
Glottidia Dall, 1870
- Glottidia albida (Hinds, 1844)
- Glottidia audebarti (Broderip, 1835)
- Glottidia palmeri Dall, 1871
- Glottidia pyramidata (Stimpson, 1860)
- Glottidia semen (Broderip, 1835)
Brachiopoda → Lingulata → Lingulida → Linguloidea → Lingulidae
Go
Goniobrochus Cooper, 1983
- Goniobrochus ewingi (Cooper, 1973)
Brachiopoda → Rhynchonellata → Terebratulida → Dyscolioidea → Dyscoliidae → Dyscoliinae
Gr
Grammetaria Cooper, 1959
- Grammetaria africana Hiller, 1986
- Grammetaria bartschi (Dall, 1920)
- Grammetaria minima Zezina, 1994
Brachiopoda → Rhynchonellata → Rhynchonellida → Norelloidea → Frieleiidae → Frieleiinae
Gryphinae
- Rod Gryphus
Brachiopoda → Rhynchonellata → Terebratulida → Terebratuloidea → Terebratulidae
Gryphus Megerle von Mühlfeld, 1811
- Gryphus capensis Jackson, 1952
- Gryphus clarkeana (Dall, 1895)
- Gryphus tokionis Dall, 1920
- Gryphus vitreus (Born, 1778)
Brachiopoda → Rhynchonellata → Terebratulida → Terebratuloidea → Terebratulidae → Gryphinae
Gw
Gwynia King, 1859
- Gwynia capsula (Jeffreys, 1859)
- Gwynia macrodentata Lüter, 2008
Brachiopoda → Rhynchonellata → Terebratulida → Gwynioidea
Natporodica Gwynioidea MacKinnon, 2006
- Rodovi: Gwynia, Simpliciforma
Brachiopoda → Rhynchonellata → Terebratulida → Terebratulida (nesiguran položaj)
Gy
Gyrothyris Thomson, 1918
- Gyrothyris mawsoni Thomson, 1918
- Gyrothyris williamsi Bitner, Cohen, Long, Richer de Forges & Saito, 2008
Brachiopoda → Rhynchonellata → Terebratulida → Terebratelloidea → Terebratellidae → Terebratellinae