Invictarx

Say it like this: “in-VIK-tarks”

Invictarx zephyri

Invictarx ate plants and walked on four legs. It lived in the Late Cretaceous. Bones have been found in the United States.

Quiz me on Invictarx

When: Late Cretaceous (Campanian) · roughly 83.6 to 72.2 million years ago
Named in: 2018 · McDonald, A. T.; Wolfe, D. G.
Hip height: 0.9 m · 3 ft
Length: 3.5 m · 11 ft
Weight: 300 kg · 661 lb
Found in: the United States · Menefee
Food and walking: Herbivore · Four legs
Kind: armored dinosaur · Ankylosaur
Family branch: Nodosauridae

The story in short

Invictarx was formally named in 2018 by A. T. McDonald and D. G. Wolfe. The name means “western wind.”

Fossils referred to Invictarx date to the Late Cretaceous (Campanian), roughly 83.6 to 72.2 million years ago. Finds come from the United States, including the Menefee Formation. It was a herbivore and walked on four legs.

Published estimates put Invictarx at a length near 3.5 m, hips about 0.9 m high, and a body mass around 300 kg.

On the family tree it sits in Nodosauridae, among the armored dinosaurs.

Close relatives

Acantholipan

Acantholipan gonzalezi

Late Cretaceous (Santonian) · roughly 85.7 to 83.6 million years ago

Animantarx

Animantarx ramaljonesi

Late Cretaceous (Cenomanian) · roughly 100.5 to 93.9 million years ago

Anoplosaurus

Anoplosaurus curtonotus

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