Acrocanthosaurus atokensis
读音： AK-roh-KAN-thoh-SORE-us ah-toh-KEN-sis
Tetanurae · Carcharodontosauridae
A large carcharodontosaurid predator from the Early Cretaceous of North America, with a ridge of very tall spines along its neck and back. Its best skeleton, "Fran", was found in Oklahoma and is in North Carolina.
- Bipedal
- Giant
- Apex predator
- Sail backed
- Trackways known
- 时代
- 白垩纪· 阿普特阶
- 食性
- 肉食性
- 体长
- 11–12 m
- 体重
- 4,400–8,400 kg
- 地点
- Oklahoma, United States
快速问答
- Acrocanthosaurus atokensis有多大？
- Acrocanthosaurus atokensis体长约11–12 m。髋部高约2.8–3.2 m。体重约4.4–8.4 t。 (Wikipedia: Acrocanthosaurus 2026; Paul 2016)
- Acrocanthosaurus atokensis生活在什么时候？
- Acrocanthosaurus atokensis生活在早白垩世，约1.214亿至1.132亿年前。 (Paleobiology Database: Acrocanthosaurus occur… 2026; Eddy & Clarke 2011)
- 在哪里发现过Acrocanthosaurus atokensis的化石？
- Acrocanthosaurus atokensis的化石发现于Antlers Formation (Oklahoma)和United States。 (Stovall & Langston 1950; Eddy & Clarke 2011)
- Acrocanthosaurus atokensis吃什么？
- Acrocanthosaurus atokensis是肉食性。 (Stovall & Langston 1950; Eddy & Clarke 2011)
- Acrocanthosaurus atokensis由谁命名，何时命名？
- Acrocanthosaurus atokensis由J. Willis Stovall & Wann Langston Jr.于1950年描述。 (Stovall & Langston 1950; Eddy & Clarke 2011)
本页内容
- 时代
- 白垩纪121.4–113.2 Ma
- 食性
- 肉食性
- 体长
- 11–12 m
- 体重
- 4.4–8.4 t
- 产地
- United States
- 分类
- Tetanurae · Carcharodontosauridae
- 命名
- 1950, J. Willis Stovall & Wann Langston Jr.
概览
此内容目前仅提供英文版。
Acrocanthosaurus atokensis lived in North America in the Early Cretaceous (Aptian-Albian). J. Willis Stovall and Wann Langston Jr. named it in 1950 from two partial skeletons found in the Antlers Formation of Atoka County, Oklahoma (OMNH 10146 and 10147).
Its name, "high-spined lizard", refers to the very tall spines on its neck and back vertebrae, which probably supported a thick muscular ridge rather than a thin sail. A nearly complete skull (NCSM 14345, "Fran") was found near Idabel, Oklahoma, and is displayed at the North Carolina Museum of Natural Sciences.
It was one of the largest predators of its time, around 11 to 12 m long. Eddy and Clarke (2011) restudied the skull and placed it within the Carcharodontosauridae, the family of Giganotosaurus and Carcharodontosaurus. Large theropod trackways in the Glen Rose Formation of Texas are often attributed to it.
名称含义
"High-spined lizard", from Greek akra ("high"), akantha ("spine") and sauros ("lizard"); atokensis for Atoka County, Oklahoma (Stovall & Langston 1950).
生物学与证据
科学家对这种动物生活方式的看法，以及每种观点的证据有多充分。
运动方式
The large theropod trackways of the Glen Rose Formation were made by Acrocanthosaurus.
证据等级：假说It is the only large theropod known from the region at the right time, but footprints cannot be matched to a species with certainty.
支持 / 反对证据 · 1
支持证据
足迹行迹 · Glen Rose large theropod trackways
Large three-toed theropod footprints in the Glen Rose Formation of Texas, including those along the Paluxy River.
其他
Acrocanthosaurus was a carcharodontosaurid, a relative of Giganotosaurus.
证据等级：有力证据Detailed study of its skull places it inside Carcharodontosauridae, in agreement with several other analyses; a few earlier ones linked it more closely to Allosaurus.
支持 / 反对证据 · 1
支持证据
系统发育推断 · Acrocanthosaurus skull phylogeny
A re-described skull (NCSM 14345) scored in a new allosauroid dataset places Acrocanthosaurus well within Carcharodontosauridae.
Acrocanthosaurus had a ridge of very tall spines along its neck and back.
证据等级：直接证据The spines are preserved on its vertebrae. They probably anchored a thick muscular ridge rather than a thin sail; the soft tissue is not preserved.
支持 / 反对证据 · 1
支持证据
标本 · Acrocanthosaurus tall neural spines
Exceptionally tall neural spines along the neck and back vertebrae, the feature that gives the genus its name.
标本： OMNH 10147
体型
- 体长
- 11–12 m
- 身高
- 3 m文献范围 2.8–3.2 m
- 体重
- 4,400–8,400 kg
（39.4 英尺）
依据 NCSM 14345
（9.8 英尺）
依据 NCSM 14345 (femur c. 1.28 m)
依据 NCSM 14345
时间线
时代： 阿普特阶 (121.4–113 Ma), 阿尔布阶 (113–100.5 Ma), 早白垩世 (145–100.5 Ma)
Aptian bounds of the type collection in PBDB (PBDB time scale). Eddy & Clarke give the Trinity Group as Aptian-Albian, and other referred material is younger.
产地
地层
- Antlers Formation · Oklahoma
- Atoka County, Oklahoma (Antlers Formation) · Antlers Formation · Oklahoma · 位置为近似值
这些是发现化石的地点，而不是该动物生活的全部范围。
生态系统
生活于： Antlers
120–112 百万年前 · 泛滥平原, 河流水系, 沿海平原
Early Cretaceous plains of the Trinity Group in Oklahoma, Arkansas and north-east Texas.
分类
- 演化支Dinosauria
- 演化支Saurischia
- 演化支Theropoda
- 演化支Tetanurae
- 总科Allosauroidea
- 科Carcharodontosauridae
- 属Acrocanthosaurus
- 种Acrocanthosaurus atokensis
分类地位： 有效
化石记录
| 编号 | 类型 | 收藏机构 | 发现年份 |
|---|---|---|---|
| OMNH 10146 | 正模标本 | Sam Noble Oklahoma Museum of Natural History (OMNH) | — |
| OMNH 10147 | 副模标本 | Sam Noble Oklahoma Museum of Natural History (OMNH) | — |
| NCSM 14345 “Fran” | 归入标本 | North Carolina Museum of Natural Sciences (NCSM) | — |
已发现的部分
正模标本: OMNH 10146
- 保存
- 部分保存
- 复原
- 未知 / 未记录
正模标本: OMNH 10146
按部位查看（表格）
| 部位 | 状态 |
|---|---|
| Skull | 部分保存 · Braincase and posterior skull fragments. |
| Mandible | 部分保存 |
| Teeth | 未知 / 未记录 |
| Cervical vertebrae | 未知 / 未记录 |
| Dorsal vertebrae | 未知 / 未记录 |
| Sacrum | 未知 / 未记录 |
| Caudal vertebrae | 未知 / 未记录 |
| Ribs | 未知 / 未记录 |
| Gastralia | 未知 / 未记录 |
| Scapula / shoulder girdle | 未知 / 未记录 |
| Humerus | 未知 / 未记录 |
| Forearm (radius / ulna) | 未知 / 未记录 |
| Hand (manus) | 未知 / 未记录 |
| Pelvis | 未知 / 未记录 |
| Femur | 未知 / 未记录 |
| Tibia / fibula | 未知 / 未记录 |
| Foot (pes) | 未知 / 未记录 |
归入标本: NCSM 14345 “Fran”
按部位查看（表格）
| 部位 | 状态 |
|---|---|
| Skull | 保存 |
| Mandible | 保存 |
| Teeth | 未知 / 未记录 |
| Cervical vertebrae | 未知 / 未记录 |
| Dorsal vertebrae | 未知 / 未记录 |
| Sacrum | 未知 / 未记录 |
| Caudal vertebrae | 未知 / 未记录 |
| Ribs | 未知 / 未记录 |
| Gastralia | 未知 / 未记录 |
| Scapula / shoulder girdle | 未知 / 未记录 |
| Humerus | 未知 / 未记录 |
| Forearm (radius / ulna) | 未知 / 未记录 |
| Hand (manus) | 未知 / 未记录 |
| Pelvis | 未知 / 未记录 |
| Femur | 未知 / 未记录 |
| Tibia / fibula | 未知 / 未记录 |
| Foot (pes) | 未知 / 未记录 |
发现
- 命名年份
- 1950
- 命名者
- J. Willis Stovall & Wann Langston Jr.
- 模式标本
- OMNH 10146
发现时间线
1950 · 正式命名
Stovall and Langston name Acrocanthosaurus
The "high-spined lizard" is named from two skeletons from Atoka County, Oklahoma.
人物：J. Willis Stovall, Wann Langston Jr.
2011 · 重要研究
Eddy and Clarke redescribe the skull of Acrocanthosaurus
The fully prepared skull of "Fran" is described and used to place Acrocanthosaurus among carcharodontosaurids.
参考文献
- (2026). Paleobiology Database: Acrocanthosaurus occurrences. The Paleobiology Database (paleobiodb.org), data service 1.2, accessed 2026-09-23. https://paleobiodb.org/data1.2/occs/list.txt?base_name=Acrocanthosaurus&show=coords,paleoloc,strat,loc,ref&pgm=gplates（在新标签页中打开）
- (2026). Wikipedia: Acrocanthosaurus. Wikipedia (English), accessed 2026-09-23. https://en.wikipedia.org/wiki/Acrocanthosaurus（在新标签页中打开）
- Eddy, D. R. & Clarke, J. A. (2011). New information on the cranial anatomy of Acrocanthosaurus atokensis and its implications for the phylogeny of Allosauroidea (Dinosauria: Theropoda). PLoS ONE 6: e17932. doi:10.1371/journal.pone.0017932（在新标签页中打开）
- Paul, G. S. (2016). The Princeton Field Guide to Dinosaurs (2nd edition). Princeton University Press.
- Stovall, J. W. & Langston, W., Jr. (1950). Acrocanthosaurus atokensis, a new genus and species of Lower Cretaceous Theropoda from Oklahoma. American Midland Naturalist 43: 696. doi:10.2307/2421859（在新标签页中打开）