👉 Austrofossombronia is a type of fossil known for its unique appearance, resembling a stylized, toothed frog or spider-like creature with a distinctive forked tail and a long, slender body. This species was discovered in the Paleogene period (about 25 million years ago) in South America, where it lived during the early stages of the Cambrian explosion, also known as the "Great Oxygenation Event."