Tennyson, A. J. D., and B. M. Tomotani. “A New Fossil Species of Procellaria (Aves: Procellariiformes) from the Pliocene of New Zealand”. Papéis Avulsos De Zoologia, vol. 61, Jan. 2021, p. e20216116, doi:10.11606/1807-0205/2021.61.16.