Verleye et al., 2011
From dinoflaj3
Verleye, T., Pospelova, V., Mertens, K.N. and Louwye, S., 2011: The geographical distribution and (palaeo)ecology of Selenopemphix undulata sp. nov., a new late Quaternary dinoflagellate cyst from the Pacific Ocean. Marine Micropaleontology, v.78, no.3-4, p.65-83, pl.1-2.