Hylonomus is recognized as one of the earliest known reptiles, dating back to the Carboniferous period, around 300 million years ago. This small, lizard-like creature is significant as it represents a crucial evolutionary step from amphibians to reptiles, showcasing adaptations that allowed vertebrates to thrive in terrestrial environments. Its discoveries have provided valuable insights into the early evolution of reptiles and the transition to fully land-based lifestyles.
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