SWEET, Arthur R. Reflections on the Cretaceous-Tertiary Boundary Plant Record According to W.A.S. Sarjeant: Comment on Dinosaur Extinction, Sudden or Slow, Cataclysmic or Climatic?. Geoscience Canada, [S. l.], v. 24, n. 4, 1997. Disponível em: https://journals.lib.unb.ca/index.php/GC/article/view/3957. Acesso em: 5 may. 2024.