Uploaded July 2026 | Updated September 2026, 2 weeks ago
When elasmosaurus cruised through prehistoric oceans, it must have made a strange sight: This snaggle-tooth creature had a neck like a giraffe and a body that resembled a whale with a tail! This dino could sneak next to prey and attack without the victim realizing there was a 46-foot-long monster lurking there. Jaws brimming with a tangle of sharp teeth finished prey with a single bite. They Lived in The Late Cretaceous Period and They Are Found in North America and They Are Borned in 1868
ft: @TigersharkNation2691
@disneyvillainrocket1
@thomashuffman3237
@spencerstark6420
Measuring 10.3 meters (34 ft) in length, Elasmosaurus would have had a streamlined body with paddle-like limbs, a short tail, a small head, and an extremely long neck. The neck alone was around 7.1 meters (23 ft) long. Along with its relative Albertonectes, it was one of the longest-necked animals to have lived, with the second largest number of neck vertebrae known, 72, at least 3 fewer than Albertonectes. The skull would have been slender and triangular, with large, fang-like teeth at the front, and smaller teeth towards the back. It had six teeth in each premaxilla of the upper jaw, and may have had 14 teeth in the maxilla and 19 in the dentary of the lower jaw. Most of the neck vertebrae were compressed sideways, and bore a longitudinal crest or keel along the sides.
The family Elasmosauridae was based on the genus Elasmosaurus, the first recognized member of this group of long-necked plesiosaurs. Elasmosaurids were well adapted for aquatic life, and used their flippers for swimming. Contrary to earlier depictions, their necks were not very flexible, and could not be held high above the water surface. It is unknown what their long necks were used for, but they may have had a function in feeding. Elasmosaurids probably ate small fish and marine invertebrates, seizing them with their long teeth, and may have used gastroliths (stomach stones) to help digest their food. Elasmosaurus is known from the Pierre Shale formation, which represents marine deposits from the Western Interior Seaway.
When elasmosaurus cruised through prehistoric oceans, it must have made a strange sight: This snaggle-tooth creature had a neck like a giraffe and a body that resembled a whale with a tail! This dino could sneak next to prey and attack without the victim realizing there was a 46-foot-long monster lurking there. Jaws brimming with a tangle of sharp teeth finished prey with a single bite. They Lived in The Late Cretaceous Period and They Are Found in North America and They Are Borned in 1868
ft: @TigersharkNation2691
@disneyvillainrocket1
@thomashuffman3237
@spencerstark6420
Measuring 10.3 meters (34 ft) in length, Elasmosaurus would have had a streamlined body with paddle-like limbs, a short tail, a small head, and an extremely long neck. The neck alone was around 7.1 meters (23 ft) long. Along with its relative Albertonectes, it was one of the longest-necked animals to have lived, with the second largest number of neck vertebrae known, 72, at least 3 fewer than Albertonectes. The skull would have been slender and triangular, with large, fang-like teeth at the front, and smaller teeth towards the back. It had six teeth in each premaxilla of the upper jaw, and may have had 14 teeth in the maxilla and 19 in the dentary of the lower jaw. Most of the neck vertebrae were compressed sideways, and bore a longitudinal crest or keel along the sides.
The family Elasmosauridae was based on the genus Elasmosaurus, the first recognized member of this group of long-necked plesiosaurs. Elasmosaurids were well adapted for aquatic life, and used their flippers for swimming. Contrary to earlier depictions, their necks were not very flexible, and could not be held high above the water surface. It is unknown what their long necks were used for, but they may have had a function in feeding. Elasmosaurids probably ate small fish and marine invertebrates, seizing them with their long teeth, and may have used gastroliths (stomach stones) to help digest their food. Elasmosaurus is known from the Pierre Shale formation, which represents marine deposits from the Western Interior Seaway.
