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File:Gutter cast (Cuyahoga Formation, Lower Mississippian; Rt. 35 roadcut, northeast of Rittenours, Ohio, USA) (40044709575).jpg - Wikimedia Commons
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When storms go bad: their impact on gutter cast distribution and dimensions, based on new data from the Miocene of eastern Borneo | Semantic Scholar
![File:Gutter cast (Waynesville Formation or Liberty Formation, Upper Ordovician; Caesar Creek Lake's emergency spillway, Warren County, Ohio, USA) 2 (44772970854).jpg - Wikimedia Commons File:Gutter cast (Waynesville Formation or Liberty Formation, Upper Ordovician; Caesar Creek Lake's emergency spillway, Warren County, Ohio, USA) 2 (44772970854).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/7/7b/Gutter_cast_%28Waynesville_Formation_or_Liberty_Formation%2C_Upper_Ordovician%3B_Caesar_Creek_Lake%27s_emergency_spillway%2C_Warren_County%2C_Ohio%2C_USA%29_2_%2844772970854%29.jpg)
File:Gutter cast (Waynesville Formation or Liberty Formation, Upper Ordovician; Caesar Creek Lake's emergency spillway, Warren County, Ohio, USA) 2 (44772970854).jpg - Wikimedia Commons
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