Humanosaurus appeared at the beginning of the anthropocene period and became, for 350,000 years, the dominant terrestrial vertebrate on Earth.

The species suffered catastrophic extinction one and a half million years ago and very little evidence remains of their civilization.

The fossilized skeletons so far discovered indicate Humanosaurus was a highly aggressive and territorial mammal, extremely destructive and seemingly oblivious to the effect of its actions.

Evidence suggests a contempt for their ecological environment and during their brief tenure they exterminated almost every other species on both land and in water.

Continents were reduced to sterile desert and catastrophic pollution of both the atmosphere and oceans increased the acceleration of their demise.

Archaeological studies suggest that unrestrained population escalation and mass migration combined with the unsustainable consumption of natural resources created a worldwide catastrophe, resulting in their eventual and total extinction.

This immature adult male appears to have perished as a result of the numerous diseases accumulated during prolonged periods of malnourishment during its short life.

The extinction of the species Humanosaurus and the sub group, Homo Sapiens, (Humans), created the void filled by the next great dominant mammalian species, the Rodents and in particular, Rats.