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Sauroposeidon facts for kids

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Temporal range:
Lower Cretaceous
Sauroposeidon dinosaur.svg
Scientific classification

Wedel et al., 2000

Sauroposeidon is a genus of sauropod dinosaur found in Oklahoma. It is one of the biggest dinosaur yet found.

Habit and diet

Sauroposeidon lived in what was then a river delta flowing into the Bay of Mexico. It was a plant-eater that probably ate leaves from the tops of trees, perhaps conifers and early flowering trees like magnolias, palms, and sycamores.


Estimates of Sauroposeidon's size are based on a comparison between the four Sauroposeidon vertebrae and the vertebrae of the HM SII specimen of Giraffatitan in the Humboldt Museum in Berlin. The HM SII is the most complete brachiosaur known. Comparisons to the other relatives of Sauroposeidon are difficult due to limited remains.

The neck length of Sauroposeidon is estimated at 11.25–12 m (37–39 ft), compared to a neck length of 9 m (30 ft) for the HM SII Giraffatitan. This is based on the assumption that the rest of the neck has the same proportions as Giraffatitan, which is a reasonably good conjecture.

Sauroposeidon was probably able to raise its head 17 m (56 ft) above the ground, which is as high as a six-story building. In comparison, Giraffatitan could probably raise its head 13.5 m (44 ft) into the air.

Sauroposeidon's shoulder height has been estimated at 6–7 m (20–23 ft) based on an interpretation of the animal as a brachiosaurid. Estimates of its total possible length have ranged from 28 m (92 ft) to 34 m (112 ft).

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