This Triassic dinosaur belonged to the Staurikosauridae family ("Southern
Cross lizards" named after the star constellation seen in the Southern
Hemisphere). Living in both North and South America during the middle
to late Triassic, this six-and-a-half-foot
dinosaur was probably as heavy as a human adult. It had large, sharp
teeth, and it may have been the very first dinosaur to be able to
attack bigger animals. No one has determined if this dinosaur was
a theropod or a saurischian. It appears to be a primitive dinosaur.