Acrocanthosaurus
Acrocanthosaurus ( ; meaning "high-spined lizard") is a genus of carcharodontosaurid dinosaur that existed in what is now North America during the Aptian and early Albian stages of the Early Cretaceous. Like most dinosaur genera, "Acrocanthosaurus" contains only a single species, "A. atokensis". Its fossil remains are found mainly in the U.S. states of Oklahoma, Texas, and Wyoming, although teeth attributed to "Acrocanthosaurus" have been found as far east as Maryland, suggesting a continent wide range.

"Acrocanthosaurus" was a bipedal predator. As the name suggests, it is best known for the high neural spines on many of its vertebrae, which most likely supported a ridge of muscle over the animal's neck, back, and hips. "Acrocanthosaurus" was one of the largest theropods, reaching in length, and weighing up to . Large theropod footprints discovered in Texas may have been made by "Acrocanthosaurus", although there is no direct association with skeletal remains.

Recent discoveries have elucidated many details of its anatomy, allowing for specialized studies focusing on its brain structure and forelimb function. "Acrocanthosaurus" was the largest theropod in its ecosystem and likely an apex predator which preyed on sauropods, ornithopods, and ankylosaurs.
Q34740
genus
Concept
Q131334
carcharodontosaurid
Concept
Q430
dinosaur
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Q49
North America
LOC
Q622265
Aptian
LOC
Q301728
Albian
TIME
Q752187
Early Cretaceous
TIME
Q40614
fossil
Concept
Q30
U.S.
LOC
Q1649
Oklahoma
LOC
Q1439
Texas
LOC
Q1214
Wyoming
LOC
Q1391
Maryland
LOC
Q372949
bipedal
Concept
Q170430
predator
Concept
Q180323
neural spines
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Q180323
vertebra
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Q1073
brain
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Q37813
ecosystem
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Q19067
apex predator
Concept
Q14416
sauropod
Concept
Q467430
ornithopod
Concept
Q273617
ankylosaur
Concept
Q131021
Acrocanthosaurus
Concept
Q131021
Acrocanthosaurus
Concept
Q131021
Acrocanthosaurus
Concept
Q131021
Acrocanthosaurus
Concept
Q131021
Acrocanthosaurus
Concept
Q131021
Acrocanthosaurus
Concept
Q131021
Acrocanthosaurus
Concept
taxon rank
location of discovery
location of discovery
location of discovery
location of discovery