Near the top of the world’s highest peak, climbers sometimes spot seashells and delicate crinoid stems locked inside pale limestone, a jarring sight in the thin, frozen air. Those fossils formed on an ...

Excavated from a hayfield near Warrensburg, Fossil Pond and its limestone evoke an age 300 million years ago when a vast sea covered much of the Midwest, including Kansas City. Gary Rhoades From a ...

The 150-million-year-old Solnhofen Limestone in southern Germany contains prehistoric lagoon deposits known for yielding wonderfully preserved fossils, including those of pterosaurs: flying reptiles ...

The black "marble" tombstone is made of limestone that likely came from Belgium. International Journal of Historical Archaeology A mysterious black tombstone that marked the final resting place of a ...

Mammoth Cave, the world's longest known cave system, stretches 426 miles under Kentucky. The cave's limestone began forming 330 million years ago when the region was submerged under an ocean. Visitors ...