10/10/2026
Fossil Friday: Swimming in 165 million year old mammal relatives? ⚠️🏊♂️
While dinosaurs dominated the Jurassic, a small, otter-sized mammaliaform was exploring a very different way of life. 🦦🦴
Meet Megacauda sungei, a 165-million-year-old animal discovered in Inner Mongolia, China, that is helping scientists rethink the evolution of early mammals.
Its fossil preserves evidence of specialised throat anatomy and adaptations associated with swimming, suggesting that some mammal-like traits evolved earlier than previously recognised.
Even more fascinating, this discovery offers evidence that early mammaliaforms were already adapting to different environments while dinosaurs walked the Earth. 🦖
It’s another reminder that mammal evolution was far more complex than we once imagined!