Ma
Macandrevia King, 1859
- Macandrevia africana Cooper, 1975
- Macandrevia americana Dall, 1895
- Macandrevia bayeri Cooper, 1975
- Macandrevia cranium (O. F. Müller, 1776)
- Macandrevia diamantina Dall, 1895
- Macandrevia tenera (Jeffreys, 1876)
Brachiopoda → Rhynchonellata → Terebratulida → Zeillerioidea → Zeilleriidae → Macandreviinae
Macandreviinae
- Rod: Macandrevia
Brachiopoda → Rhynchonellata → Terebratulida → Zeillerioidea → Zeilleriidae
Magadinella Thomson, 1915
- Magadinella mineuri Richardson, 1987
Brachiopoda → Rhynchonellata → Terebratulida → Terebratelloidea → Terebratellidae → Terebratellidae (nesiguran položaj)
Magasella
- prihvaćeno kao Terebratella d'Orbigny, 1847
Magellania Bayle, 1880
- Magellania flavescens (Lamarck, 1819)
- Magellania fragilis Smith, 1907
- Magellania joubini Blochmann, 1906
- Magellania venosa (Solander, 1789)
Brachiopoda → Rhynchonellata → Terebratulida → Terebratelloidea → Terebratellidae → Magellaniinae
Potporodica Magellaniinae
- Rod: Magellania
Brachiopoda → Rhynchonellata → Terebratulida → Terebratelloidea → Terebratellidae
Manithyris Foster, 1974
- Manithyris rossi Foster, 1974
Brachiopoda → Rhynchonellata → Rhynchonellida → Norelloidea → Frieleiidae → Hispanirhynchiinae
Me
Megathiris d'Orbigny, 1847
- Megathiris barroisi (Schulgin, 1884)
- Megathiris capensis Jackson, 1952
- Megathiris detruncata (Gmelin, 1791)
Brachiopoda → Rhynchonellata → Terebratulida → Megathyridoidea → Megathyrididae
Megathyrididae
- Rodovi: Argyrotheca, Joania, Megathiris
Brachiopoda → Rhynchonellata → Terebratulida → Megathyridoidea
Megathyridoidea
- Porodica Megathyrididae
- Porodica Thaumatosiidae
Brachiopoda → Rhynchonellata → Terebratulida
Megerlia King, 1850
- Megerlia acrura Hiller, 1986
- Megerlia granosa Seguenza, 1865
- Megerlia truncata (Linnaeus, 1767)
Brachiopoda → Rhynchonellata → Terebratulida → Kraussinoidea → Kraussinidae
Megerlina Deslongchamps, 1884
- Megerlina atkinsoni (Woods, 1878)
- Megerlina capensis (Adams & Reeve, 1850)
- Megerlina davidsoni (Vélain, 1877)
- Megerlina lamarckiana (Davidson, 1852)
- Megerlina natalensis (Krauss, 1843)
- Megerlina pisum (Lamarck, 1819)
- Megerlina striata Jackson, 1952
Brachiopoda → Rhynchonellata → Terebratulida → Kraussinoidea → Kraussinidae
Melvicalathis Lee et al., 2008
- Melvicalathis macroctena (Zezina, 1981)
Brachiopoda → Rhynchonellata → Terebratulida → Cancellothyroidea → Chlidonophoridae → Eucalathinae
Mi
Minutella Hoffmann & Lüter, 2010
- Minutella bruntoni Hoffmann & Lüter, 2010
- Minutella minuta (Cooper, 1981)
- Minutella tristani Hoffmann & Lüter, 2010
Brachiopoda → Rhynchonellata → Terebratulida → Thecideida → Thecideoidea → Thecidellinidae → Minutellinae
Potporodica Minutellinae Logan & Baker, 2013
- Rod: Minutella
Brachiopoda → Rhynchonellata → Terebratulida → Thecideida → Thecideoidea → Thecidellinidae
Mu
Murravia Thomson, 1916
- Murravia exarata (Verco, 1910)
Brachiopoda → Rhynchonellata → Terebratulida → Cancellothyroidea → Cancellothyrididae → Cancellothyridinae