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Story summary
- Acronichthys maccagnoi, a new fossil fish, was found in southwestern Alberta dating to the Late Cretaceous.
- The 4 cm species sheds light on otophysan evolution, including catfish.
- Researchers from Western University and the Royal Tyrrell Museum used micro-CT scans to study it non-destructively.
- Findings indicate otophysans moved from marine to freshwater at least twice, diverging around 154 million years ago.
