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Researchers discover ancient predatory, fanged fish that swam in Nova Scotia waters

  • Researchers discovered Mosura fentoni, an ancient predatory arthropod with three eyes and clawed limbs from the Cambrian Burgess Shale in Canada.
  • The discovery followed examination of exceptionally preserved fossils revealing soft tissues and reflective patches suggesting an unusual open circulatory system for its era.
  • Mosura featured a distinctive rear section composed of 16 gill-bearing segments, coupled with wide, paddle-shaped limbs and a slim body, distinguishing it from related radiodonts such as Anomalocaris.
  • The research team named Mosura fentoni as a tribute to Mothra from popular culture, stating this namesake reflects the creature's alien-like appearance and science fiction inspirations.
  • This finding provides new insights into early animal evolution during the Cambrian Explosion and enriches understanding of the complexity of ancient marine ecosystems.
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HALIFAX — Researchers have discovered a new species of ancient fish with crouched anterior hooks, making it a formidable and effective predator. An article published this week in the Journal of Vertebrate Paleontology indicates that the long curved jaw of the animal makes it possible to understand the evolution of fish to smaller anterior teeth, acting as hooks, about 350 million years ago. In addition, the posterior hooks, length of one centime…

·Richelieu, Canada
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Researchers have discovered a new species of ancient fish with crouched anterior crusts, making it a formidable and effective predator.

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CTV News broke the news in Canada on Saturday, June 21, 2025.
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