Scientists discovered the first known fully marine amphibian in China. Two nearly complete skeletons were found in the country. The fossils date back 237 million years to the Triassic Period. The amphibians had armor-like features. They adapted to marine life during that era. Researchers studied the fossils to understand their evolution. The find offers new insights into ancient ecosystems. The discovery was made in a remote area of China. The amphibians lived in shallow seas. Their remains show unique adaptations for underwater survival. This could change understanding of early vertebrate evolution. The fossils were preserved in sedimentary rock. The study was published in a scientific journal. The find highlights China's role in paleontological research.