Look up · dinosaur 817 of 1,425
long-neck giant
Mierasaurus
Say it like this: “me-EHR-ah-SOR-us”
Mierasaurus bobyoungi
Mierasaurus ate plants and walked on four legs. It lived in the Early Cretaceous. Bones have been found in the United States.
- When
- Early Cretaceous (Valanginian) · roughly 137.1 to 132.6 million years ago
- Named in
- 2017 · Royo-Torres, R.; Upchurch, P.; Kirkland, J. I.; DeBlieux, D. D.; Foster, J. R.; Cobos, A.; Alcalá, L.
- Hip height
- 2.7 m · 9 ft
- Length
- 11.5 m · 38 ft
- Weight
- 4.8 tonnes
- Found in
- the United States · Cedar Mountain
- Food and walking
- Herbivore · Four legs
- Kind
- long-neck giant · Sauropod
- Family branch
- Turiasauria
The story in short
The genus Mierasaurus dates to 2017, the year R. Royo-Torres and colleagues described it. The name honors a person tied to the fossil or its study.
It lived in the Early Cretaceous (Valanginian), roughly 137.1 to 132.6 million years ago. Finds come from the United States, including the Cedar Mountain Formation. It was a herbivore and walked on four legs.
Published estimates put Mierasaurus at a length near 11.5 m, hips about 2.7 m high, and a body mass around 4.8 tonnes.
On the family tree it sits in Turiasauria, among the sauropod dinosaurs.
Close relatives
Amanzia
Amanzia greppini
Late Jurassic (Kimmeridgian) · roughly 154.8 to 149.2 million years ago
Losillasaurus
Losillasaurus giganteus
Late Jurassic (Kimmeridgian · Tithonian) · roughly 154.8 to 143.1 million years ago
Moabosaurus
Moabosaurus utahensis
Early Cretaceous (Barremian) · roughly 125.8 to 121.4 million years ago