Fossil of a semi-aquatic choristoderan reptile (Monjurosuchus splendens) – Early Cretaceous Name: Monjurosuchus sp. Probable species: Monjurosuchus splendens Classification: Choristodera Age: Early Cretaceous Locality: Western Liaoning, China Despite the inclusion of "crocodile" in its name, Monjurosuchus is not a true crocodilian but belongs to the extinct order Choristodera. These animals were semi-aquatic reptiles inhabiting freshwater ecosystems during the Mesozoic Era, likely frequenting lakes, rivers, and riparian environments. The Jehol Biota of western Liaoning is world-renowned for its exquisitely preserved fossils of dinosaurs, birds, fish, mammals, and reptiles. This specimen features a complete skeletal outline; the long tail, trunk ribs, and limb structures are particularly well-defined, making it a highly representative example of the aquatic or semi-aquatic reptiles from the Early Cretaceous of western Liaoning. It belongs to the famous Jehol Biota. The specimen preserves a relatively complete skeleton of a small choristoderan reptile, including the skull, cervical vertebrae, trunk, ribs, limbs, and an elongated tail.