Ancient predator was one of first vertebrates to grow fast while young

The bones of 2-metre-long tetrapod Whatcheeria reveal that it had an early growth spurt – a trait that was thought to have evolved later

Ancient predator was one of first vertebrates to grow fast while young
The bones of 2-metre-long tetrapod Whatcheeria reveal that it had an early growth spurt – a trait that was thought to have evolved later