You searched for City|State|Country: , sd us
Showing results 1 to 10 of 18
historicalmarkerproject/markers/HM24XU_what-a-find_Wall-SD.html
Your fossil discovery begins a scientific process. Every detail is important, even the area around the find. A fossil and its surroundings reveal what types of plants and animals existed and how they lived, died, and changed.
The layer of rock …
historicalmarkerproject/markers/HM24X9_reading-the-rocks_Wall-SD.html
These rocks were deposited millions of years ago when rivers and wind spread silt, sand, and ash across the landscape. About 500,000 years ago, ancient rivers began eroding this area, leading to the present day landscape. Modern rivers, rain, and …
historicalmarkerproject/markers/HM24X7_bands-of-time_Wall-SD.html
Rock layers in Badlands National Park contain fossils that show a dramatic cooling and drying of global climate over millions of years. The oldest rock layers contain marine fossils, roughly 70 million years old, from when this area was underwater…
historicalmarkerproject/markers/HM24X6_a-75-million-year-walk_Wall-SD.html
This trail features seven types of animals that once lived in the area now known as Badlands National Park. Each of these lineages met a different fate as the climate changed. Some moved, some adapted to the changes, and some are now extinct. Walk…
historicalmarkerproject/markers/HM24VU_dying-to-become-a-fossil_Wall-SD.html
Oredonts were common throughout the Badlands, but became extinct. Their fossil remains provide evidence of their lives and habitat. Fossils can develop over time when animal or plant remains are quickly covered in sediment and replaced by minerals…
historicalmarkerproject/markers/HM24VQ_purple-heart-memorial-highway_Belvidere-SD.html
On May 24, 2012, the South Dakota DOT's Transportation Commission officially declared Interstate 90 from the Minnesota border to the Wyoming border as South Dakota's segment of the National Purple Heart Trail. The Purple Heart Trail was establishe…
historicalmarkerproject/markers/HM24VP_invisible-warriors_Philip-SD.html
...(for) people who are on alert at the launch missile control centers it's very much an invisible thankless job....nobody sees what they do, nobody cares about it. I see them as almost invisible warriors, the security police that are there, the…
historicalmarkerproject/markers/HM24VO_off-to-the-races_Wall-SD.html
Horses have adapted in North America over millions of years. As woodlands changed to grasslands, the dog-sized, primitive horses gradually evolved into the lineage that led to the modern-day horse.
Mesohippus was the first three-toed horse; anc…
historicalmarkerproject/markers/HM24VH_fight-for-survival_Wall-SD.html
Fossils can reveal how animals lived and died, and what their environment was like. Evidence from one of the park's nimravid fossils offers crime-scene clues. The size and location of the holes in the forehead of this fossil match the knife-like t…
historicalmarkerproject/markers/HM24UK_its-a-dogs-life_Wall-SD.html
Dogs have changed and adapted over millions of years. Members of the dog lineage gradually evolved in to the wolf by growing longer, stronger legs and a shorter tail. This increased size led to increased strength and power to hunt food and escape …