Early Ichthyosaur

Photograph by O. Louis Mazzatenta

Ichthyosaurs were big-eyed, dolphin-shaped marine reptiles that lived during the Triassic, Jurassic, and Cretaceous periods. This specimen, uncovered in the hills of Guizhou Province, China, was an early species that had a rather reptilian look; later species took on a more fishlike form.