When this Anomaly opened, it was located twenty to thirty feet in the air above the ground (on the present side at least). Through it, came a Pteranodon and a swarm of Anurognathus into the skies above the Forest Heights Country Club golf course. The Anurognathus were later killed by a gas explosion, and the Pteranodon was sent back through the Anomaly, seconds before it closed.
This was the first aerial Anomaly seen in Primeval.
It is unclear whether this Anomaly led to the Jurassic or the Cretaceous, as Pteranodon lived during the Cretaceous, while Anurognathus was from the Jurassic.