Sauroposeidon was a large sauropod dinosaur from the Cretaceous Period.


Being Sauropods, Sauroposeidons had very long necks, long tails, small heads (relative to the rest of their body), and four thick, pillar-like legs. They could grow up to 18 metres in height with its neck extended, with an estimated length of up to 34 metres.

Incursions and encounters

Fire and Water

A herd of Sauroposeidon appears on a railway line: six enormous youngsters and one adult, with the mother being trapped in the railway tunnel from which the anomaly appeared. Becker attempts to put her out of her misery by shooting her in the head. However, the Sauroposeidon is only injured, and it barges its away out of the tunnel, chasing the team down the railway line. After the mother eventually dies, the youngsters are led towards the tunnel and the anomaly with a box of catnip (which attracts the animals like a magnet). But before they can go through, two more Sauroposeidon come through. The additional pair mingles with the now orphaned animals, and with the help of more catnip, are all driven through the anomaly.

On the other side of the anomaly, it is shown that Tom Samuels has built a huge oil mine (complete with a defensive smörgåsbord of anti-tank/air guns, missiles, heavy cannons, shells, and mortars), and is mining oil from the past. Samuels then traps the Anomaly Research Centre team ,in the past. After Samuels' weapons nearly destroy the ARC team's military support and kills one of the dinosaurs, Connor hatches a plan. Using a hastily built catapult, they fire a box-full of catnip towards the mine, and the Sauroposeidon herd instinctively follow it. Even with the onslaught of the guns and missiles, they manage to reach the building, crashing into it. They cause an array of oil barrels to collapse, creating an explosion that takes out most of the building. They are last seen when what remains of the the herd nurses their wounds and heads off into the distance.

Real life

Sauroposeidon is a genus of Brachiosaurid dinosaur. It is only known from four neck vertebrae that were found in South-Western Oklahoma. Like all other Brachiosaurids, it was a quadrapedal herbivore with front legs longer that the rear legs, a build similar to a modern giraffe. Extrapolations based on its more completely known relative Brachiosaurus indicate that the head of Sauroposeidon could reach 18 metres (59 feet) in height with its neck extended, making it the tallest known dinosaur. With an estimated length of up to 34 metres (112 ft) and a mass of 50–60 t (55–66 short tons), it also ranks highly among the longest and heaviest.


  • This is the largest creature in Primeval though it is not shown in the TV series.
  • Sauroposeidon is the first and only sauropod to be encountered.
  • It is the last main creature to appear in the Older Novel series.
Wikipedia has a more detailed and comprehensive article on Sauroposeidon!