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sharp-clawed runner
Ekrixinatosaurus
Say it like this: “a-CREEK-see-NAH-toe-SOR-us”
Ekrixinatosaurus novasi
Ekrixinatosaurus ate meat and walked on two legs. It lived in the Late Cretaceous. Bones have been found in Argentina.
- When
- Late Cretaceous (Cenomanian) · roughly 100.5 to 93.9 million years ago
- Named in
- 2004 · Calvo, J. O.; Rubilar-Rogers, D.; Moreno, K.
- Hip height
- Not established
- Length
- 6.5–11 m · 21–36 ft
- Weight
- 800 kg · 1,764 lb
- Found in
- Argentina · Candeleros
- Food and walking
- Carnivore · Two legs
- Kind
- sharp-clawed runner · Theropod
- Family branch
- Brachyrostra
The story in short
In 2004, J. O. Calvo and colleagues published the name Ekrixinatosaurus. The name means “explosion-born reptile.”
It lived in the Late Cretaceous (Cenomanian), roughly 100.5 to 93.9 million years ago. Finds come from Argentina, including the Candeleros Formation. It was a carnivore and walked on two legs.
Published estimates put Ekrixinatosaurus at a length near 6.5–11 m and a body mass around 800 kg.
On the family tree it sits in Brachyrostra, among the theropod dinosaurs.
Close relatives
Elemgasem
Elemgasem nubilus
Late Cretaceous (Turonian · Coniacian) · roughly 93.9 to 85.7 million years ago
Guemesia
Guemesia ochoai
Late Cretaceous (Campanian · Maastrichtian) · roughly 83.6 to 66 million years ago
Ilokelesia
Ilokelesia aguadagrandensis
Late Cretaceous (Cenomanian · Turonian) · roughly 100.5 to 89.8 million years ago