HUERTAS G., G. A study of the leaf cuticles from carboniferous deposits of North America. Boletín de Geología, [S. l.], n. 4, p. 5–18, 1960. Disponível em: https://revistas.uis.edu.co/index.php/revistaboletindegeologia/article/view/4011. Acesso em: 19 may. 2024.