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Species found in Agate include: Miohippus, Merychippus and Parahippus, ancestors of the modern day horse. Diceratherium, two-horned rhinoceros. Menoceras, pony-sized rhinoceros, the most common animal found in the fossil beds. [7] Daphoenodon and Ysengrinia, two types of mid-sized bear dogs. Promerycochoerus, a semiaquatic hippo-like oreodont.
Agate is in Sioux County, Nebraska, United States. Agate is located on Nebraska Highway 29 , 19 miles (31 km) south-southeast of Harrison . It is home to Agate Fossil Beds National Monument .
A characteristic feature of thundereggs is that (like other agates) the individual beds they come from can vary in appearance, though they can maintain a certain specific identity within them. Thunderegg is not synonymous with either geode or agate. A geode is a simple term for a rock with a hollow in it, often with crystal formation/growth.
John Day Fossil Beds National Monument is a U.S. national monument in Wheeler and Grant counties in east-central Oregon.Located within the John Day River basin and managed by the National Park Service, the park is known for its well-preserved layers of fossil plants and mammals that lived in the region between the late Eocene, about 45 million years ago, and the late Miocene, about 5 million ...
The Fairburn Agate is a type of gemstone found in the agate beds of Southwestern South Dakota and Northwestern Nebraska. It is also the state gemstone of South Dakota. [ 1 ] Fairburns are characterized from other types of agate by their colors and the shape of the bands.
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Abies amabilis, commonly known as the Pacific silver fir, is a fir native to the Pacific Northwest of North America, occurring in the Pacific Coast Ranges and the Cascade Range. It is also commonly referred to in English as the white fir , red fir , lovely fir , amabilis fir , Cascades fir , or silver fir .
The concretions were created by the precipitation of iron, which was dissolved in groundwater. The iron was originally present as a thin film of iron oxide surrounding sand grains in the Navajo Sandstone. Groundwater containing methane or petroleum from underlying rock beds reacted with the iron oxide, converting it to soluble reduced iron ...