Jurassic swimming mammaliaform shows how mammal throats evolved
Researchers have named a new fossil animal, Megacauda sungei, a swimming mammaliaform that foraged in water in a way comparable to the modern platypus. Their work is peer-reviewed and appears in the journal Nature.
The fossil shows that the animal could swallow and suckle like a mammal. It fills a gap in how the throat features evolved that let mammals swallow as adults and suckle as babies. The details available to us do not name the research team or give the size of the animal, so this account is limited to the main finding.