The Argentinosaurus nesting grounds are featured in New Giants.
The nesting grounds are first seen when a baby Argentinosaurus is born. Then a pterosaur arrives and prepares to eat the hatchling. However, the pterosaur is scared away by a Skorpiovenator. The Skorpiovenator then proceeds to eat the newborn. It eats another hatchling before the Argentinosaurus herd arrives and sends the Skorpiovenator off running. Then the herd grazes. The nesting grounds are never seen again after the herd leaves them.
1. The nesting grounds are in Argentina.