Template:Jordan et al., 2015
- Jordan, R.W., Abe, K., Cruz, J., Eriksen R., Guerreiro, C., Hagino, K., Heldal, M., Hernández-Becerril, D.U., Malinverno, E., Nishida, S., Patil, S.M., Šupraha, L., Thomsen, H.A., Triantaphyllou, M.V. & Young, J.R. 2015. Observations on the morphological diversity and distribution of two siliceous nannoplankton genera, Hyalolithus and Petasaria. Micropaleontology 61(6): 439–455. DOI: 10.47894/mpal.61.6.04, JSTOR