A Pterodactylus preserved beautifully uncrushed from the famous Solnhofen Limestone in Southern Germany. Kimmeridgian, Jurassic. Ctenochasmatoidea Photo took at the Dinosaurier Freilicht Museum, Altmühltal

A Pterodactylus preserved beautifully uncrushed from the famous Solnhofen Limestone in Southern Germany. Kimmeridgian, Jurassic. Ctenochasmatoidea Photo took at the Dinosaurier Freilicht Museum, Altmühltal

The Wilbour Plaque. A slab of limestone believed to have been used as a reference guide for students learning how to draw royalty. It features raised carvings of what may represent pharaoh Akhenaten and queen Nefertiti. Egypt, 18th dynasty. 1352 to 1336 B.C. [1536×1124]

The Wilbour Plaque. A slab of limestone believed to have been used as a reference guide for students learning how to draw royalty. It features raised carvings of what may represent pharaoh Akhenaten and queen Nefertiti. Egypt, 18th dynasty. 1352… Continue Reading

The Standard of Ur. A trapezoidal wooden box of unknown purpose, inlaid with mosaics of lapis lazuli, shell and red limestone, depicting scenes of wartime and peacetime. 26th century BC. [750×446]

The Standard of Ur. A trapezoidal wooden box of unknown purpose, inlaid with mosaics of lapis lazuli, shell and red limestone, depicting scenes of wartime and peacetime. 26th century BC. [750×446]

Limestone statue of Hemiunu from his tomb. Beleived to have been the architect behind the Great (Khufu’s) Pyramid of Giza, the statue features an unusually realistic style not commonly seen during the time period. Egypt, 4th dynasty. ~2570 BC [1543×2725]

Limestone statue of Hemiunu from his tomb. Beleived to have been the architect behind the Great (Khufu’s) Pyramid of Giza, the statue features an unusually realistic style not commonly seen during the time period. Egypt, 4th dynasty. ~2570 BC [1543×2725]

Long Island, Bahamas. As the tide recedes, the clear blue water gathers in tidal inlets carved in the limestone sediment, and flows into deeper basins; Bernhard Edmaier [2048 x 2047]

Long Island, Bahamas. As the tide recedes, the clear blue water gathers in tidal inlets carved in the limestone sediment, and flows into deeper basins; Bernhard Edmaier [2048 x 2047]

Crinoids fossil: crinoids filled the seas during the Carboniferous period and even earlier. Their fossils are frequently found in limestone from the period, giving the Carboniferous the nickname the “Age of the Crinoids [1280 x 1024]

Crinoids fossil: crinoids filled the seas during the Carboniferous period and even earlier. Their fossils are frequently found in limestone from the period, giving the Carboniferous the nickname the “Age of the Crinoids [1280 x 1024]

Parallel fibers that stiffened a pterosaur’s wing membrane—each just two-thousandths of an inch (0.05 millimeters) thick—are visible in this fossil of a Rhamphorhynchus. The fossil was found in Germany’s Solnhofen limestone beds, where incredibly fine grain preserves minute details [1280×1024]

Parallel fibers that stiffened a pterosaur’s wing membrane—each just two-thousandths of an inch (0.05 millimeters) thick—are visible in this fossil of a Rhamphorhynchus. The fossil was found in Germany’s Solnhofen limestone beds, where incredibly fine grain preserves minute details [1280×1024]