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| Pandale dart point found in stratum 21 within Zone 4 of Arenosa. Though the older strata of Zone 4 (30, 28, 25b, 23d, and 23b) were dominated by Pandale points, the later strata (23, 22b, 21b, 21, 20, 19a, 18, 16, and 14) contained mainly Langtry, Val Verde, Montell, Shumla, and Almagre points. |