Ozarkian
/əʊˈzɑːkɪən/noun
1A native or inhabitant of the Ozark region; = Ozarker.
2A system formerly regarded as intervening between the Late Cambrian and the Early Ordovician of North America. Now historical.
adjective
1Of, relating to, or designating the Ozarkian system. Now historical.
2Of, relating to, or characteristic of the Ozark region of the central United States, its inhabitants, or the variety of English spoken there.
Origin
Late 19th century; earliest use found in Forest and Stream: a weekly journal of the rod and gun. From the name of Ozark, a region of the central United States + -ian.