Provincial series, Canada. Considered Middle Cambrian. Rarely used. See Acadian Phase for the Devonian-Dinantian orogenic era. Indexed with age if applicable.
Middle Paleozoic (?Upper Devonian-Dinantian) orogenic era. May be used for the Northern Appalachians. Use Acadian for the ?Middle Cambrian age. Also search orogeny AND Acadian. Indexed with ages as applicable.