Squires R.K. & Goedert J.L. (1991). New Late Eocene mollusks from localized limestone deposits formed by subduction-related methane seeps, southwestern Washington. Journal of Paleontology. 65(3): 412-416.
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Squires R.K. & Goedert J.L.
1991
New Late Eocene mollusks from localized limestone deposits formed by subduction-related methane seeps, southwestern Washington