Alvarezsaurus: a small Late Cretaceous theropod from Argentina Alvarezsaurus Alvarezsaurus is a small bipedal theropod from Upper Cretaceous Argentina (≈86–83 Ma). A basal alvarezsaur with cursorial hindlimbs, it helps document the transition to the short-a…
Bicentenaria: a small coelurosaurian theropod from Late Cretaceous Argentina Bicentenaria Bicentenaria is a genus of small carnivorous coelurosaurian theropods from Argentina, known from early Late Cretaceous (~90 Ma) deposits. The type species is Bicentenaria argentina…
