Euchambersia (name meaning "Chamber's Good Animal") is a genus of therocephalian therapsids that originated during the Late Permian era in what is now South Africa and China. Measuring only a meter long, these small carnivorous mammals possessed a venomous bite more lethal than modern snakes.
In the Series 1 finale "Dawn of the Mesozoic", a pack of four Euchambersia were brought to the park from Early Triassic Antarctica, 248 million years ago. They reside in the Gorgonopsid Canyon Enclosure.