Field notes, New England, undated
Page 15
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Transcription
2. Dark iron grey, feebly calcareous sandstone or quartzite. With fucoids. Upper Potsdam. Upper Potsdam 200' 3 Subcrystalline limestone. Orthoceras small. Encrinal discs Lower Calciferous 20'-25' 4 Dark greenish fine-grained SS. Lower 12'o 15' perforated with small scolithi (S. minutus) Scolithus minutus The rest interstratified with dolomitic limestone, holding Ophileta compacta Ophileta complanata Maclurea Orthosina trilobite te. Calciferous. See next page.