Invictarx Facts
Pronunciation: in-VIK-tarks ZEF-eye-rye
Name meaning: Unconquered fortress of the west wind
| Diet | Herbivore |
| Height | 1.5m |
| Length | 5m |
| Weight | 2 tonnes |
| Environment | Land |
| Era | Cretaceous |
| Period | Late Cretaceous |
| Type | Ankylosaur |
| Location | North America |
Invictarx was a heavily armoured ankylosaur that lived approximately 83.6 million years ago during the Late Cretaceous period in what is now New Mexico. This impressive herbivore was built like a living tank, with thick bony armour covering its back and sides to protect it from the fearsome predators of its time.
Measuring around 5 metres in length and standing about 1.5 metres tall at the hip, Invictarx was a substantial creature that would have weighed roughly 2 tonnes. Its low-slung, quadrupedal body was perfectly adapted for a life spent browsing on low-growing plants and ferns. Like other ankylosaurs, it possessed a small head relative to its body size, with a beak-like mouth ideal for cropping vegetation.
The fossil remains of Invictarx were discovered in the upper Allison Member of the Menefee Formation, providing valuable insights into the diverse ecosystem of Late Cretaceous North America. Interestingly, this ankylosaur shares several characteristics with another armoured dinosaur called Glyptodontopelta, which lived in the same region but slightly later in time, suggesting these creatures were closely related.
As a herbivore, Invictarx would have spent much of its time foraging for food, using its powerful limbs to support its heavily armoured body as it moved through the ancient forests and floodplains of prehistoric New Mexico.
What made Invictarx distinctive?
Invictarx was characterised by its extensive bony armour plating across its back and sides, typical of ankylosaurs. Its robust, low-built body and relatively small head with a beak-like snout made it well-suited for ground-level plant browsing.
Behaviour
Invictarx likely lived a relatively peaceful existence, spending most of its time foraging for plants close to the ground. When threatened by predators, it would have relied on its heavy armour plating for protection, possibly crouching down to protect its vulnerable underside.
Discovery
Invictarx was first described by Andrew T. McDonald and Douglas G. Wolfe in 2018. The original fossils were discovered at Menefee Formation, New Mexico, USA.
Invictarx FAQ
What did Invictarx eat?
Invictarx was a herbivore that fed on plants, ferns, and other vegetation. It used its beak-like mouth to crop low-growing plants and would have spent much of its day foraging for food in the forests and floodplains of
Late Cretaceous New Mexico.
How big was Invictarx?
Invictarx measured approximately 5 metres in length and stood about 1.5 metres tall at the hip. It weighed roughly 2 tonnes, making it a substantial but not gigantic member of the ankylosaur family.
When did Invictarx live?
Invictarx lived during the
Late Cretaceous period, specifically around 83.6 million years ago. This places it in the middle part of the Late Cretaceous, well before the mass extinction that ended the age of dinosaurs.
Where was Invictarx found?
Invictarx fossils were discovered in New Mexico, USA, specifically in the upper Allison Member of the Menefee Formation. This geological formation has been a rich source of
Late Cretaceous dinosaur fossils.
How do you pronounce Invictarx?
Invictarx is pronounced 'in-VIK-tarks ZEF-eye-rye'. The genus name comes from Latin words meaning 'unconquered fortress', whilst the species name refers to the west wind.
What does Invictarx mean?
Invictarx means 'unconquered fortress of the west wind'. The name reflects both its heavily armoured, defensive body structure and its discovery location in the western United States.
How fast could Invictarx run?
The running speed of Invictarx is unknown, but like other heavily armoured ankylosaurs, it was probably quite slow-moving. Its defensive strategy relied on armour rather than speed to avoid predators.
What type of dinosaur was Invictarx?
Invictarx was an ankylosaur, specifically a member of the nodosaurid family. Ankylosaurs were heavily armoured, herbivorous dinosaurs known for their defensive bony plating and low-slung body shape.
Was Invictarx related to birds?
As an ankylosaur, Invictarx belonged to the ornithischian dinosaurs, which were not directly ancestral to modern birds. Birds evolved from theropod dinosaurs, which belonged to a different major group called saurischians.
How many Invictarx fossils have been found?
Invictarx is known from three isolated, incomplete postcranial skeletons (body fossils excluding the skull). This makes it a relatively rare find, and much about its anatomy remains to be discovered through future fossil discoveries.
