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beaked plant-eater
Morrosaurus
Say it like this: “MOH-ro-SOR-us”
Morrosaurus antarcticus
Morrosaurus ate plants and walked on two legs. It lived in the Late Cretaceous. Bones have been found in Antarctica.
- When
- Late Cretaceous (Maastrichtian) · roughly 72.2 to 66 million years ago
- Named in
- 2016 · Rozadilla, S.; Agnolín, F. L.; Novas, F. E.; Aranciaga Rolando, A. M.; Motta, M. J.; Lirio, J. M.; Isasi, M. P.
- Hip height
- Not established
- Length
- 4.5–5 m · 15–16 ft
- Weight
- Not established
- Found in
- Antarctica · Snow Hill Island
- Food and walking
- Herbivore · Two legs
- Kind
- beaked plant-eater · Ornithopod
- Family branch
- Elasmaria
The story in short
The genus Morrosaurus dates to 2016, the year S. Rozadilla and colleagues described it.
Fossils referred to Morrosaurus date to the Late Cretaceous (Maastrichtian), roughly 72.2 to 66 million years ago. Finds come from Antarctica, including the Snow Hill Island Formation. It was a herbivore and walked on two legs.
Published estimates put Morrosaurus at a length near 4.5–5 m.
On the family tree it sits in Elasmaria, among the ornithopod dinosaurs.
Close relatives
Anabisetia
Anabisetia saldiviai
Late Cretaceous (Turonian) · roughly 93.9 to 89.8 million years ago
Atlascopcosaurus
Atlascopcosaurus loadsi
Early Cretaceous (Barremian · Aptian · Albian) · roughly 125.8 to 100.5 million years ago
Chakisaurus
Chakisaurus nekul
Late Cretaceous (Cenomanian · Turonian) · roughly 100.5 to 89.8 million years ago