science π Giant croc ruled ancient South America's food chain
A massive 23-foot crocodylian, Purussaurus neivensis, may have been the top predator in Miocene South America. This giant lived in an ecosystem featuring enormous prey like glyptodonts and astrapotheres. The study analyzed fossil bite marks dating from 10.5 to 16 million years ago. Researchers found that the frequency of marks suggests Purussaurus heavily influenced herbivore populations. This shows the power of ancient giants in shaping tropical communities. π