The Perisphinctes species of ammonite was most present during the Jurassic Period (199.6 to 145.5 million years ago). The climate during this time period is known for being both extremely warm and wet. Many of the world's most famous dinosaurs came about during this time, including Stegosaurus sp., Brachiosaurus sp., and Allosaurus sp. The earliest form of a bird also developed during this time. It would later be discovered and named Archaeopteryx sp.
Ammonites are an extinct group of marine animals named after the Egyptian god Amun who is famous for his "Ram's Horns." These sea creatures had soft bodies with tentacles. Their shells were chambered allowing them to propel themselves through the water. This species of ammonites is characterized by its ribbed shells and white exterior. There have been more than 10,000 species of ammonites identified, but none lived past the Cretaceous Period (145.5 to 66 million years ago), dying out along with the last of the dinosaurs. These interesting sea creatures survived three different extinction events, even the Permian extinction, a global warming event caused by volcanic activity and killed 96 percent of all sea life.
Average Length: 1-2 in.
Average Weight: ~3.2 oz
Species: Perisphinctes sp.
You will receive one (1) ammonite similar to the ones pictured. Colors may vary based on screen size and resolution.