STEPANEK, Joshua G., & J. Patrick KOCIOLEK 2012 (online Nov. 1) ('2013') Several new species of Amphora and Halamphora from the western USA Diatom Research 28(1/2): 61-76, 93 figs., 1 table Amphora waldeniana, A. copulatoides, A. manifesta, Halamphora latecostata, H. subtilis, H. punctata, H. coloradiana