The coast of the vast inland sea was a sight to behold. The crystal blue waters stretched as far as the eye could see, almost splitting North America in half. As the tide fell, the shoreline came alive with the arrival of giants. These giants were known as Alamosaurus. Towering over the land at a staggering hundred feet in length and weighing around 80 tonnes, they were the largest dinosaurs on the continent. they were so massive that even the mighty Tyrant Lizard King could not take them down.

Alamosaurus was the only known sauropod to have lived in North America after the sauropod hiatus - a 30-million-year gap where no definite sauropod fossils were found. The earliest fossils of Alamosaurus dated back to the Maastrichtian age, around 70 million years ago. From then on, it quickly became the dominant large herbivore of southern Laramidia. what made Alamosaurus truly unique was its size. It rivaled the largest sauropods like Argentinosaurus, which lived in South America around 97-92 million years ago. The Alamosaurus was a true titan among dinosaurs. But size wasn't the only thing that set Alamosaurus apart. It was also armored with osteoderms, a feature commonly seen in titanosaurs. This bony defense was confirmed by a groundbreaking discovery in 2015. For years, scientists had speculated about the presence of osteoderms in Alamosaurus, but it wasn't until a team of paleontologists stumbled upon a fossil with intact osteoderms that their theory was confirmed. This discovery shed new light on the evolution and adaptations of sauropods in North America.

A Herd of Them enters the scene, consisting of 23 to 30 individuals. Sometimes, Being older Makes Them larger and Taller, compared to the young ones.