Content overview: “Fossil First: Armored Amphibian Lived Entire Life at Sea, Scientists Say”. In a groundbreaking discovery, paleontologists have identified a fossil amphibian that appears to have lived its entire life in the ocean—a first for the group, which typically requires freshwater for reproduction. The creature, described in a new study published in the journal Nature, possessed bon The creature, described in a new study published in the journal Nature, possessed bony armor plates, a feature previously unknown in amphibians. The fossil, dating back approximately 240 million years to the Triassic period, was unearthed in China and named Qianosuchus mixtus.
Its anatomy suggests a fully marine lifestyle, with adaptations for swimming and a salt-tolerant physiology. This finding challenges long-held assumptions about amphibian evolution and their ecological limitations. It also provides new insight into how some vertebrates transitioned from land back to the sea. This listing links straight to the original page, where the content is available in full.