Agate in Sioux County, Nebraska — The American Midwest (Upper Plains)
A volcanic ash layer called the Agate Ash found just above Quarry A has been dated at 21.9 million years, providing evidence of the approximate age of the fossils. Quarry A is older than the waterhole bonebed at University and Carnegie Hills by an unknown time interval, probably in excess of one million years.
Collecting fossils of any size or type is a violation of federal regulations.
Lower Right: This rhinoceros, Diceratherium niobrarense, was the most commonly found animal in Quarry A, while the smaller rhinoceros, Menoceras, was rare. In the main Agate bonebed, the opposite held true.
Lower Right: In this 1908 photo, University of Nebraska workers drive a heavy wagon load of fossils down University Hill. The light colored ridge near the top enter
Erected by Agate Fossil Beds National Monument, National Park Service.
Topics. This historical marker is listed in these topic lists: Paleontology • Parks & Recreational Areas. A significant historical year for this entry is 1904.
Location. 42° 25.055′ N, 103° 43.661′ W. Marker is in Agate, Nebraska, in Sioux County. Marker can be reached from River Road, 3.2 miles east of State Highway 29. The marker is located along the 2 mile Fossil Hill loop trail. Touch for map. Marker is at or near this postal address: 301 River Road, Harrison NE 69346, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within walking distance of this marker. An Ancient Waterhole (here, next to this marker); Footprints in the Mud (a few steps from this marker); Historic Excavations (about 600 feet away, measured in a direct line); Chalicotheres (about 600 feet away); Menoceras (about 600 feet away); Beardog (approx. 0.2 miles away); Exploring the Niobrara (approx. 0.3 miles away); Fossil Hills Trail (approx. 0.6 miles away). Touch for a list and map of all markers in Agate.
More about this marker. The Agate Fossil Beds National Monument is a fee-free National Park Service site.
Also see . . .
1. History & Culture. Agate Fossil Beds National (Submitted on July 15, 2022, by James Hulse of Medina, Texas.)
2. Diceratherium. Wikipedia (Submitted on July 15, 2022, by James Hulse of Medina, Texas.)
Credits. This page was last revised on July 15, 2022. It was originally submitted on July 15, 2022, by James Hulse of Medina, Texas. This page has been viewed 52 times since then and 20 times this year. Photos: 1, 2, 3. submitted on July 15, 2022, by James Hulse of Medina, Texas.