Every now and again palaeontologists come across a fossil so weird it takes decades of detective work to finally understand its relationship to other organisms. The 275-million-year-old Helicoprion is one of these enigmas.
Every now and again palaeontologists come across a fossil so weird it takes decades of detective work to finally understand its relationship to other organisms. The 275-million-year-old Helicoprion is one of these enigmas.
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