Punin Quebrada Chalan, Introduction

Most fossils are preserved at the American Museum of Natural History : AMNH 1752, AMNH 1753, AMNH 1757, Ecu A-10 and 12, Ecuador # 8, 13, 19. Some belong to the Paleontological Miseum of Paris: PUN 7, 11, 198, 203, and Pun Hofstetter 1967.