Theropods first appeared during the MISC@1 age of the Late Triassic about NUMBER@1 million years ago -LRB- Ma -RRB- and were the sole large terrestrial carnivores from the Early Jurassic until the close of the MISC@2 , about NUMBER@2 PERSON@1 .

Theropods first appear during the MISC@1 age of the Late Triassic about NUMBER@3 million years ago . Then , they were the sole large terrestrial carnivores from the Early Jurassic until the close of the MISC@2 , about NUMBER@2 million years ago .
