Very HardAcrocanthosaurus
Acrocanthosaurus atokensis
ak-roh-KAN-thoh-SORE-us· “high-spined lizard”
🕰️ Cretaceous🥩 carnivore🦴 Carcharodontosauridae
11.5 m
Length
3.7 m
Height
5.5 t
Weight
A huge predator with tall spines along its back forming a low ridge or sail. It was the apex hunter of early Cretaceous North America.
When
Early Cretaceous, ~113–110 million years ago
Found in
United States
Discovered
J. Willis Stovall, 1950
Did you know?
- Tall spines along its backbone formed a muscular ridge down its back.
- It was the top predator of its time and place in North America.
- Fossil trackways seem to show it stalking a giant long-necked sauropod.
Artwork: TotalDino, Wikimedia Commons, CC BY-SA 4.0.