Classification of Brachiopods

• PHYLUM  Brachiopoda, (lower Cambrian to Recent)

• CLASS-1 Inarticulata, (lower Cambrian to Recent)

• ORDER-I  Atremata, (lower Cambrian to Recent)
• SUBORDER-1 Lingulacea, (lower Cambrian to Recent)
• SUBORDER-2 Trimerellacea,, (Middle ordovician to Upper Silurian)
• ORDER-II Neotremata, (lower Cambrian to Recent)
• SUBORDER-1 Paterinacea, (lower and middle Cambrian )
• SUBORDER-2 Siphonotretacea,, (lower Cambrian to middle ordovician)
• SUBORDER-3 Acrotretacea,, (lower Cambrian to upper ordovician)
• SUBORDER-4 discinacea,, (Middle ordovician to Recent)
• SUBORDER-5 craniacea ,, (lower Cambrian to middle ordovician)

• CLASS-2 Articulata, (lower Cambrian to Recent)
• ORDER-I Palaeotremata,, (lower Cambrian)
• ORDER-II orthida,, (lower Cambrian to upper Permian)
• SUBORDER-1 orthacea,, (lower Cambrian to lower devonian)
• SUBORDER-2 Dalmanellacea,, (Middle ordovician to upper Permian)
• ORDER-III Terebratulida,, (Upper Silurian to Recent)
• ORDER-IV Pentamerida,, (Middle  Cambrian to Upper devonian)
• SUBORDER-1 Syntrophiacea, (Middle  Cambrian to lower devonian)
• SUBORDER-2 Pentameracea, (upper ordovician to Upper devonian)
• ORDER-V Triplesiida, (Middle  ordovician to Upper devonian)
• ORDER-VI Rhynchonellida, (Middle  ordovician to Recent)
• SUBORDER-1 Rhynchonellacea, (Middle  ordovician to Recent)
• SUBORDER-2 Rhynchoporacea, (Mississippian to Recent)
• ORDER-VII Strophomenida, (Lower ordovician to Recent)
• SUBORDER-1 Strophomenacea, (Lower ordovician to Recent)
• SUBORDER-2 Productacea, (upper ordovician to upper permian)
• ORDER-VIII Spriferida, (Middle ordovician to Jurrassic)
• SUBORDER-1 Atrypacea(Lower ordovician to Recent)
• SUBORDER-2 Spiriferacea, (Middle silurian to Jurassic)
• SUBORDER-3 Rostrospiracea, (Middle silurian to Jurassic)
• SUBORDER-4 Punctospiracea, (upper silurian to Jurassic)