Palmqvist Barrena, Paul. «Trophic Levels and the Observational Completeness of the Fossil Record». Spanish Journal of Palaeontology 8, no. 1 (agosto 10, 2022): 33–36. Accedido noviembre 13, 2024. https://turia.uv.es/index.php/sjpalaeontology/article/view/24454.