Amygdalodon

Say it like this: “am-ig-DAL-o-don”

Amygdalodon patagonicus

Amygdalodon ate plants and walked on four legs. It lived in the Early Jurassic. Bones have been found in Argentina.

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When: Early Jurassic (Pliensbachian · Toarcian) · roughly 192.9 to 174.7 million years ago
Named in: 1947 · Cabrera, A.
Hip height: Not established
Length: 15 m · 49 ft
Weight: 5 tonnes
Found in: Argentina · Lonco Trapial
Food and walking: Herbivore · Four legs
Kind: long-neck giant · Sauropod
Family branch: Sauropoda

The story in short

Amygdalodon was formally named in 1947 by A. Cabrera. The name means “almond tooth.”

It lived in the Early Jurassic (Pliensbachian · Toarcian), roughly 192.9 to 174.7 million years ago. Finds come from Argentina, including the Lonco Trapial Formation. It was a herbivore and walked on four legs.

Published estimates put Amygdalodon at a length near 15 m and a body mass around 5 tonnes.

On the family tree it sits in Sauropoda, among the sauropod dinosaurs.

Close relatives

Aepisaurus

Aepisaurus elephantinus

Early Cretaceous (Albian) · roughly 113.2 to 100.5 million years ago

Archaeodontosaurus

Archaeodontosaurus descouensi

Middle Jurassic (Bathonian) · roughly 168.2 to 165.3 million years ago

Asiatosaurus

Asiatosaurus mongoliensis

Early Cretaceous (Aptian · Albian) · roughly 121.4 to 100.5 million years ago