Adult Keichousaurus hui: 22 cm Juvenile Keichousaurus hui: 8 cm This is an exceptionally well-preserved “Keichousaurus hui' fossil, discovered in Late Middle Triassic marine strata in Guizhou, China (approximately 240 million years ago). This slab preserves two adult individuals of Keichousaurus hui. One adult lies directly on top of the other, creating a clear superimposed arrangement. Near the tail region of the lower individual, a juvenile is present. The bones are sharply defined, and the anatomical details are exceptionally clear. Very rare and special; don't miss it if you're interested.