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long-neck giant
Haplocanthosaurus
Say it like this: “hap-lo-KAN-tho-SAWR-us”
Haplocanthosaurus priscus
Haplocanthosaurus ate plants and walked on four legs. It lived in the Late Jurassic · Early Cretaceous. Bones have been found in the United States.
- When
- Late Jurassic · Early Cretaceous (Oxfordian–Berriasian) · roughly 161.5 to 137.1 million years ago
- Named in
- 1903 · Hatcher, J. B.
- Hip height
- 3.5 m · 11 ft
- Length
- 14.8 m · 49 ft
- Weight
- 12.8 tonnes
- Found in
- the United States · Morrison
- Food and walking
- Herbivore · Four legs
- Kind
- long-neck giant · Sauropod
- Family branch
- Diplodocoidea
The story in short
In 1903, J. B. Hatcher published the name Haplocanthosaurus.
Fossils referred to Haplocanthosaurus date to the Late Jurassic · Early Cretaceous (Oxfordian–Berriasian), roughly 161.5 to 137.1 million years ago. Finds come from the United States, including the Morrison Formation. It was a herbivore and walked on four legs.
Published estimates put Haplocanthosaurus at a length near 14.8 m, hips about 3.5 m high, and a body mass around 12.8 tonnes.
On the family tree it sits in Diplodocoidea, among the sauropod dinosaurs.
This entry is the whole genus. The type species is Haplocanthosaurus priscus. Other named species include Haplocanthosaurus delfsi.
Other species with this name
- Haplocanthosaurus priscus
- Haplocanthosaurus delfsi