439millionyearold

Abstract Physics Light Waves Evolution

Shocking 439-million-year-old ‘shark’ is forcing scientists to rethink evolutionary timeline

These findings provide hard evidence of the massive diversification of vertebrate groups tens of millions of years before the onset of what is known as the “Age of Pisces”, around 420 million years ago. The ancient shark was found in China and is the oldest jawed ancestor of man. Top predators in the ocean are …

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Volumetric Reconstruction of a Tooth Whorl

439-million-year-old fossil teeth upend long-held views on evolution

Volumetric reconstruction of a dental whorl seen from its lingual side (holotype of Double Qianoduss). The specimen is just over 2 mm long. Credit: Zhu, et al. Rare Chinese fossil teeth have changed scientists’ beliefs about vertebrate evolution. An international team of scientists has discovered toothed fish remains dating back 439 million years, suggesting that …

439-million-year-old fossil teeth upend long-held views on evolution Read More »

Volumetric Reconstruction of a Tooth Whorl

439-million-year-old fossil teeth upend long-held views on evolution

Volumetric reconstruction of a dental whorl seen from its lingual side (holotype of Double Qianoduss). The specimen is just over 2 mm long. Credit: Zhu, et al. Rare Chinese fossil teeth have changed scientists’ beliefs about vertebrate evolution. An international team of scientists has discovered toothed fish remains dating back 439 million years, suggesting that …

439-million-year-old fossil teeth upend long-held views on evolution Read More »