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Prehistoric water-dwelling weirdo with sideways teeth and a twisted jaw was already a 'living fossil' 275 million years ago

Tanyka amnicola, an early Permian stem tetrapod, had twisted jaws and grinding denticles, suggesting it was a rare plant-eating species among mostly carnivorous relatives.

  • Researchers published a description of Tanyka amnicola on March 4, 2026, in Proceedings of the Royal Society B.
  • From a dry riverbed in northeastern Brazil, the team recovered nine lower jawbones showing the same twist across specimens, suggesting repeated find rather than deformation claims.
  • Analysis showed the lower jaws were twisted so teeth pointed outward to the sides, with denticles forming a grinding surface, suggesting a plant-grinding feeding inference.
  • Field Museum collaborators note Tanyka represents persistence of an older stem tetrapod lineage and suggests some may have been herbivorous, challenging assumptions of strict carnivory.
  • They estimate Tanyka may have reached around 3 feet, but scientists caution that without associated skull bones many details remain unknown.
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Creature with twisted jaw and sideways-facing teeth discovered

The plant-eater Tanyka was a “living fossil” when it stalked the Earth around 275 million years ago.

Paleontologists have discovered an unusual fossil with a curved jaw and teeth pointing sideways. According to them, it was a “living fossil” when it lived on Earth 275 million years ago, Live Science reports. The new species was named Tanyka amnicola. It is an archaic representative of tertrapods, a large group of tetrapods that today includes reptiles, birds, mammals, and amphibians. YOU WILL BE INTERESTED The oldest vertebrates could have fo…

·Kyiv, Ukraine
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Live Science broke the news in United States on Wednesday, March 4, 2026.
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