A 250-million-year-old fossil reveals the origins of mammal hearing
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A recent study suggests that sensitive hearing in mammal ancestors may have developed much earlier than previously thought. Researchers modeled sound movement through the skull of Thrinaxodon, a 250-million-year-old precursor to mammals, indicating it likely possessed an early eardrum for detecting airborne sounds. This finding challenges the traditional belief that these ancient creatures primarily relied on their jaws or bones for hearing. The research highlights the early evolution of a crucial aspect of modern mammalian hearing.
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The study of Thrinaxodon contributes to a broader understanding of the evolutionary adaptations that led to the diverse range of hearing abilities seen in modern mammals. It also opens new avenues for research into the evolutionary biology of sensory systems, indicating that the transition from reptilian to mammalian characteristics involved more intricate developments than previously understood.
This article is based on research findings and interpretations that are subject to further validation and peer review.
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