Table 3 Brachiopod palaeobiogeographic provincialism of the Pennsylvanian

I Boreal Realm

I₁ Barents Region

I_1–1 Verkhoyansk–Taymyr Province

I_1–2 Yukon–Pechora Province

I₂ Central Asia Region

I_2–1 Mongolia–Okhotsk Province

II Tethys Realm

II₁ West Tethys Region

II_1–1 Southern North America–Northern South America Province

II₂ Palaeo-Tethys Ocean Region

II_2–1 Northern Margin of the Palaeo-Tethys Ocean Province

II_2–2 South China Province

II_2–3 Southern Margin of the Palaeo-Tethys Ocean Province

III Gondwana Realm

III₁ West Gondwana Region

III_1–1 West Argentina Province

III₂ East Gondwana Region

III_2–1 Bowen–Sydney Province