Winkelmann, K., J. S. Buckeridge, A. C. Costa, M. A. M. Dionísio, A. Medeiros, M. Cachão, and S. P. Ávila. “Zullobalanus Santamariaensis sp. Nov., a New Late Miocene Barnacle Species of the Family Archaeobalanidae (Cirripedia: Thoracica), from the Azores”. Zootaxa, vol. 2680, no. 1, Nov. 2010, pp. 33–44, doi:10.11646/zootaxa.2680.1.3.