Sauropelta

Name meaning:

Shield lizard

Period of life:

115–109 mya

Period:

Cretaceous period

Habitat:

Floodplains

Taxonomy:

Ankylosaurs

Countries:

Cretaceous period Sauropelta | 3D Dinopedia

Pterodaustro

Argentinosaurus

Sauropelta (115–109 mya)

Sauropelta was an armored dinosaur belonging to the family Nodosauridae, one of the two main lineages within Ankylosauria. This heavily built herbivore lived during the Early Cretaceous, approximately 109 million years ago, in what is now the United States.

Sauropelta was a large nodosaurid: adults reached 5–6 meters in length and are estimated to have weighed up to 2 metric tons. With a shoulder height of roughly 1.5 meters, it had a low, wide, and extremely robust body plan.

The dorsal surface of the body—including the back, neck, and tail—was covered by extensive osteoderms arranged in rows, forming a rigid dermal armor that provided effective protection against large theropod predators. Unlike ankylosaurids, Sauropelta lacked a tail club and massive fused cervical rings; however, its armor was supplemented by prominent lateral spines along the shoulders, which likely played a significant defensive role. The long, muscular tail may also have been used for deterrence, balance, or limited defensive movements.

Paleoenvironmental evidence suggests that Sauropelta inhabited warm, humid ecosystems, particularly river floodplains and forested lowlands of western North America. It was a low-browsing herbivore, feeding primarily on soft shoots, ferns, and low-growing vegetation, using its broad body and slow, deliberate movement to exploit dense plant cover near the ground.

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