Dinosaur tracks have been discovered up a near vertical wall in a Bolivian quarry. Spread across a limestone slab a mile long and almost 300 feet high, this great wall at Cal Orcko near the city of Suvre reveals more than 5,000 footsteps, with 462 discrete trails. / via @Bianca Prince
The Incredible Dinosaur Wall of Bolivia
Halysite (Chain Coral) fossil! Extinct. Scientists say it's from the Silurian period, and is at least 416 million years old.
Dinosaur Valley State Park in Glen Rose, Texas was named one of the 40 Must-See Places to Take Your Kids Before They're Grown! Take the kids on a ranger-lead tour through the Paluxy riverbed and wade right up to some of the best-preserved dinosaur tracks in the world. :) - top 10 daily repins of Paydayloansturbo.com
Must-See Places to Take the Kids Before They're Grown
"You could see a human footprint like this today on any beach or patch of mud. But this footprint -- clearly from the anatomy of a modern human being -- is fossilized in stone estimated to be about 290 million years old."
Ancient Footprint - Ancient Artifacts
Tiger Iron (Stromatolite) ... Stromatolites are laminated fossils formed by blue-green algae and sediment. Sediment sticks to the surface of the living algae, forming a crust. In turn, the algae grows through the sediment to form a new layer of living matter. A new film of sediment sticks to the algae and so on. The resulting structure looks like a mound. In cross section, each layer can be seen. Stromatolites are the most abundant fossils known from the Precambrian