"As far as can be seen there is one sharp break between the Cognmans and Marlins but the faunas are very dissimilar. There must be here an hiatus seen in the different faunas and the lithic conditions. The eye fails to see the physical line that separates the two. The Tentaculite, Rondart and Crestlie represent the basal series here, but the higher beds elsewhere (Marlins) are not here. This shows the extent of the break. Gratan 12 Transitional 30 Orantian 24 Rondart 6 Crestlie 72, 12 Transitional 30 4" Entaculite seen 20.6 Delta, quartz to laline 62 .60 on thickness The Transitional beds. The Tentaculite beds seen 30'.4" Five feet above the granular bed occur eight beds of Shumayson.