110 mya -
The Cretaceous Desert is a desert that appears in 1.2.
An anomaly opens connecting the Cretaceous Desert with a present-day contruction site in London and releases a Concavenator. The Concavenator is later drawn back through the anomaly when Ryan Tayler runs through. The rest of the team runs through to try and get him back and are chased by the Concavenator. They manage to find Ryan, and they fire at the theropod with their EMD's. They quickly run back through the anomaly just before it closes, leaving the Concavenator back where it came from.
Primeval Continued Series 1