Fish - Fossilised animal - Keichousaurus - 7.7 cm

Beautiful Keichousaurus fossil. The white thread is quartz thread. The bones of this fossil are clear, and the details are very distinct.
Keichousaurus (key-cho-saurus) is a genus of marine reptile from the family of pachypleurosaurs that went extinct at the end of the Triassic during the Triassic-Jurassic extinction event. The name derives from Kweichow (now Guizhou province) in China, where the first fossil specimen was discovered in 1957. They are among the most common sauropterygian fossils recovered and are often found as nearly complete and articulated skeletons, making them popular among collectors.