Eodromaeus

Eodromaeus (meaning "dawn runner") is an extinct genus of basal theropod dinosaur from the Upper Triassic of Argentina. An almost complete articulated skeleton (the bones were still mostly connected) was found in 1996.
"Eodromaeus" has been cited by Paul Sereno as "close to the root of the dinosaurs". It is the earliest known definite theropod.
Description.
"Eodromaeus" was a relatively small dinosaur, with a total length of about from nose to tail, and a weight of about . The trunk was long and slender. It is unknown how fast "Eodromaeus" could run: about has been suggested. The animal was, like all early dinosaurs, bipedal. The forelimbs were much shorter than the hindlimbs, ending in hands with five digits. Digits IV and V were very reduced in size.