This rare creature is theorized to have lived between 106 and 97 million years ago.

Its discovery is recent, due to a very small quantity of fossils and specimens to study.

The Animantarx was discovered by accident since its still radioactive fossils were detected by scanners during geological studies.

The Animantarx is much smaller than other similar dinosaurs, although almost as well armored. This results in a species with similar defenses but a much smaller food intake required to sustain itself.