An ancient sea once divided North America from north to south; 70-million-year-old creatures from its waters still shimmer like gemstones
- Fossils from this period are displayed at the Smithsonian's National Museum of Natural History.
- South Dakota is one of the most landlocked states in the United States.
- It is more than 1,000 miles away from both the Pacific and Atlantic oceans.
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- Fossils from this period are displayed at the Smithsonian's National Museum of Natural History.
- South Dakota is one of the most landlocked states in the United States.
- It is more than 1,000 miles away from both the Pacific and Atlantic oceans.
Sources: Times of India