Early meat-eater may have led to larger plant-eaters
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/04/ticker_fossil_drawing_free.jpg?fit=860%2C460&ssl=1)
The 300-million-year-old meat-eating Eocasea martini (full animal in this illustration) may have made it possible for larger plant-eaters such as Cotylorhynchus (illustrated footprint shown) to exist.
Danielle Dufault