Montell dart point found in the thin, merged layers of strata 18-12 within Zone 4 of Arenosa. The later strata of Zone 4 (23, 22b, 21b, 21, 20, 19a, 18, 16, and 14) contained mainly Langtry, Val Verde, Montell, Shumla, and Almagre points.

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