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NEW YORK STATE MUSEUM
It is very different with the Eurypterus horizon in the Shawangunk grit. There the euryptericls occur in thin shale intercalations that are found in endless repetition between heavy beds of conglomerate and grit.[1]
- ↑ The following section has been measured at Otisville [Clarke, 1907, p. 299]:
Section of the Shawangunk series in ascending order
Erie Railroad cut ½ mile west of Otisville
129 ft of "Hudson River" shale with interbedded thin layers of sandstone
Unconformity SHAWANGUNK SERIES 12′ conglomerate 6″ shale, thinning out rapidly 2″ shale 13′ 5″ grit 8′ conglomerate 2″ shale 2″ shale 5′ grit 1′ conglomerate 4′ shale 2″ shale 7′ grit 16′ 8″ conglomerate 1′ shale becoming thicker at top of cut 2″ shale 41′ grit 6′ 10″ grit 50′ (estimated) of grit not exposed between top of railroad cut section and base of quarry section 6″ shale 2′ 10″ grit Erie Railroid quarry ⅓ mile west of Otisille
101′ grit 3′ grit 5″ shale 1″ shale 3′ 6″ grit 8′ grit 2″ shale 1″ shale 2′ grit 21′ grit 2″ shale 4″ shale 7′ 6″ grit 8′ grit 2″ shale 2″ shale 12′ grit 1′ 9″ grit 8″ shale 2″ shale 3′ grit 1′ 6″ grit 10″ shale 3″ shale 17′ 2″ grit 5′ grit 4″ shale 
Productive band. From a vertical section of 23′ 6″ beginning 198′ 7″ above contact of Shawangunk grit and "Hudson River" shale 2″ shale Very productive band in section 16′ 8″ beginning at 298′ 5″ above contact 6″ grit 
6′ grit
1″ shale 4″ shale 
4″ grit 10″ grit
2″ shale 2″ shale 
3″ 8″ grit 22″ grit 2″ shale 2″ shale 7″ grit 6″ grit 2″ shale 3″ shale Productive band; section of 1″ 9″, 343″ 3″ above contact 11″ grit 1″ 6″ grit
1″ shale 2″ shale
