When did Tiktaalik appear?

Tiktaalik, a significant transitional fossil representing a key stage in the evolution of vertebrates from water to land, is believed to have appeared around 375 million years ago during the late Devonian period. Its discovery provided crucial insights into the characteristics of early tetrapods, showcasing features such as a flat skull, neck, and strong pectoral fins. These adaptations indicate a shift towards life on land, marking an important milestone in vertebrate evolution.