What is the correct order (old to recent) of periods in Paleozoic era?
(1) Silurian, Devonian, Permian, Carboniferous
(2) Silurian, Devonian, Carboniferous, Permian
(3) Permian, Devonian, Silurian, Carboniferous
(4) Silurian, Carboniferous, Permian, Devonian