Possible relation to NW Hills. Most similarities are in Fall River and upper part Fuson-Lakota, including contact between these units. Most obvious differences - the southern Fuson-Lakota is markedly finer grained and obviously much thicker and contains lacustrine beds. Good possibility that southern hills has more Lakota than northern. In D.T. we'd would guess we had relatively similar but coarser & thicker Fuson-Lakota interval = to southern "Fuson" and massive white upper Lakota, viz. Fall River (contact of KWS) Fall River Fuson-Lakota unit out 40° N. Morison Fuson- Lakota unit Morison Possibly the coal-bearing Lakota 7.