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Photo ID: ha4a41	Subject: Minerals	Description
	Amygdules; Chalcedony; Framework Silicates; Gems; Hexagonal; Mineralogy; Silica Group; Tectosilicates	Agate, a variety of quartz.
	Photographer	Location
	Dr. Richard Busch Credit Line: Copyright © Dr. Richard Busch	NA
Photo Quality \| Large	Available for Commercial Use

Photo ID: hjz9tf	Subject: Vertebrate Fossils	Description
	Agate; Bones; Cenozoic; Fauna; Fossil Beds; Fossil Record; Fossils; Hills; Hills; Megafossils; Miocene; Mounds; Outcrops; Paleontologic Record; Paleontology; Rocks; Silicates; Tertiary	Agate Fossil Beds National Monument is located in the Niobrara River Valley in Nebraska. The park takes its name from thin lenses of agate (White River Silicate Group) in the area. Miocene-age rocks are exposed in the park in the bluffs above the Niobrara River wetlands and contain an excellent fossil record. Twenty million years ago animals such as the Dinohyus (giant pig-like animal), Stenomylus (small gazelle-camel), and Menoceras (short rhinoceros) roamed the plains. There were also carnivorous beardogs wandering around, and the land beaver Paleocastor dug spiral burrows that remain as today’s trace fossils (Daemonelix) into the ancient riverbanks. There are remnants of the ancient grasses and hoofprints of prehistoric animals in Miocene sediments preserved in the park, as well as layers of fossilized bones. View Geological Time Scale for this image.
	Photographer	Location
	NPS Credit Line: Courtesy National Park Service	North America; United States; Nebraska; Agate Fossil Beds
Photo Quality \| Large	Available for Commercial Use

Photo ID: hjz9va	Subject: Vertebrate Fossils	Description
	Agate; Bones; Cenozoic; Fauna; Fossil Beds; Fossil Record; Fossils; Hills; Hills; Megafossils; Miocene; Mounds; Outcrops; Paleontologic Record; Paleontology; Rocks; Silicates; Tertiary	Agate Fossil Beds National Monument is located in the Niobrara River Valley in Nebraska. The park takes its name from thin lenses of agate (White River Silicate Group) in the area. Miocene-age rocks are exposed in the park in the bluffs above the Niobrara River wetlands and contain an excellent fossil record. Twenty million years ago animals such as the Dinohyus (giant pig-like animal), Stenomylus (small gazelle-camel), and Menoceras (short rhinoceros) roamed the plains. There were also carnivorous beardogs wandering around, and the land beaver Paleocastor dug spiral burrows that remain as today’s trace fossils (Daemonelix) into the ancient riverbanks. There are remnants of the ancient grasses and hoofprints of prehistoric animals in Miocene sediments preserved in the park, as well as layers of fossilized bones. View Geological Time Scale for this image.
	Photographer	Location
	NPS Credit Line: Courtesy National Park Service	North America; United States; Nebraska; Agate Fossil Beds
Photo Quality \| Large	Available for Commercial Use

Photo ID: hjz9x9	Subject: Vertebrate Fossils	Description
	Bones; Cenozoic; Fauna; Fossil Beds; Fossil Record; Fossils; Megafossils; Miocene; Outcrops; Paleontologic Record; Paleontology; Rocks; Silicates; Tertiary	Agate Fossil Beds National Monument fossil stuck in the ground. This Monument is located in the Niobrara River Valley in Nebraska. The park takes its name from thin lenses of agate (White River Silicate Group) in the area. Miocene-age rocks are exposed in the park in the bluffs above the Niobrara River wetlands and contain an excellent fossil record. Twenty million years ago animals such as the Dinohyus (giant pig-like animal), Stenomylus (small gazelle-camel), and Menoceras (short rhinoceros) roamed the plains. There were also carnivorous beardogs wandering around, and the land beaver Paleocastor dug spiral burrows that remain as today’s trace fossils (Daemonelix) into the ancient riverbanks. There are remnants of the ancient grasses and hoofprints of prehistoric animals in Miocene sediments preserved in the park, as well as layers of fossilized bones. View Geological Time Scale for this image.
	Photographer	Location
	NPS Credit Line: Courtesy National Park Service	North America; United States; Nebraska; Agate Fossil Beds
Photo Quality \| Large	Available for Commercial Use

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