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![Allosaurus sp. Tooth in Matrix 1.41"](http://fossilsonline.com/cdn/shop/files/3_31de5b6c-0904-48f4-bbea-6d0f70bf9718.jpg?v=1699714565&width=2334)
Allosaurus sp. Tooth in Matrix 1.41"
Allosaurus tooth in matrix with a small repair at the tip.
The Allosaurus, a prominent theropod dinosaur from the Late Jurassic period, is one of the most well-known and extensively studied prehistoric predators. This formidable dinosaur roamed the Earth approximately 155 to 145 million years ago, during the latter part of the Jurassic era.
Physical Characteristics: Allosaurus was a large, bipedal carnivore, with a massive skull balanced by a long, heavy tail. Its average length ranged from 28 to 39 feet, and it stood about 16 feet tall. The Allosaurus had strong, muscular legs and arms ending in three-fingered hands with sharp claws, ideal for grasping prey. Its jaws were filled with serrated teeth, perfect for tearing flesh. Despite its size, Allosaurus was likely quite agile, capable of swift hunting and possibly scavenging.
Discovery and Fossils in Wyoming: Fossils of Allosaurus have been found in several locations across North America, Europe, and possibly Africa, but some of the most significant discoveries have come from the Morrison Formation in the Western United States, particularly in Wyoming. The Morrison Formation is renowned for its wealth of Late Jurassic fossils, offering a comprehensive glimpse into the era's ecosystems.
In Wyoming, the remains of Allosaurus have been unearthed in various sites, contributing greatly to our understanding of this species. The state's fossil beds have yielded numerous well-preserved skeletons, providing critical insights into the physical characteristics, growth patterns, and potential behavior of this dinosaur.
Paleontological Significance: Allosaurus is considered a quintessential example of large theropods of its time and has been the subject of extensive scientific study. Its fossils have helped paleontologists piece together the predatory habits and ecological role of large carnivorous dinosaurs in the Jurassic period. Studies of Allosaurus remains, particularly those found in Wyoming's Morrison Formation, have offered clues about its hunting and feeding strategies, social behavior, and even its potential for injuries and pathologies sustained during its lifetime.
The frequent discovery of Allosaurus remains in the Morrison Formation also suggests that this dinosaur was one of the dominant predators of its ecosystem, likely preying on large herbivorous dinosaurs. Its fossils continue to be a rich source of scientific knowledge and a window into the prehistoric world of the Late Jurassic.
Species
Allosaurus jimmadseni
AGE
Jurassic
LOCATION
Big Horn County, WY
FORMATION
Morrison Formation -- Salt Marsh Member
Size
1.41" Matrix 1.3"x1.2"
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![Allosaurus sp. Tooth in Matrix 1.41"](http://fossilsonline.com/cdn/shop/files/1_c57b3118-2457-4c07-ae56-99d2adb89796.jpg?v=1699714564&width=1766)
![Allosaurus sp. Tooth in Matrix 1.41"](http://fossilsonline.com/cdn/shop/files/2_b0dc8444-4a39-4a06-a1c0-7167dad92413.jpg?v=1699714564&width=2059)
![Allosaurus sp. Tooth in Matrix 1.41"](http://fossilsonline.com/cdn/shop/files/3_31de5b6c-0904-48f4-bbea-6d0f70bf9718.jpg?v=1699714565&width=2334)