Giant, prehistoric rodent resembling a capybara and related to the extant pakarana

Huge, flightless bird with a massive beak and powerful clawed feet

Huge, flightless bird with a massive beak and powerful clawed feet

Huge, flightless bird with a massive beak and powerful clawed feet

Huge, flightless bird with a massive beak and powerful clawed feet

Huge, flightless bird with a massive beak and powerful clawed feet, lying dead on the ground

Huge, flightless bird with a massive beak and powerful clawed feet

Huge, flightless bird with a massive beak and powerful clawed feet

Huge, flightless bird with a massive beak and powerful clawed feet that preys on a Propalaeotherium gat

Huge, flightless bird with a massive beak and powerful clawed feet

Huge, flightless bird with a massive beak and powerful clawed feet

Huge, flightless bird with a massive beak and powerful clawed feet

Huge, flightless bird with a massive beak and powerful clawed feet

Huge, flightless bird with a massive beak and powerful clawed feet

Huge, flightless bird with a massive beak and powerful clawed feet

Juvenile of a huge, flightless bird with a massive beak and powerful clawed feet

Juvenile of a huge, flightless bird with a massive beak and powerful clawed feet

Hollow tree trunk sheltering a nest with a large egg and one with a Kelenken chick

Nest of a prehistoric giant bird with a chick sitting in the middle

Nest of a prehistoric giant bird with an egg in the middle

Prehistoric giant sloth with sharp claws

Prehistoric giant sloth with sharp claws

Prehistoric giant sloth with sharp claws

Prehistoric giant sloth with sharp claws