Exploring phylogenetic relationships of Pteraspidiformes heterostracans (stem-gnathostomes) using continuous and discrete characters Author Randle, Emma Author Sansom, Robert S. text Journal of Systematic Palaeontology 2017 2016-07-20 15 7 583 599 http://dx.doi.org/10.1080/14772019.2016.1208293 journal article 10.1080/14772019.2016.1208293 1478-0941 10883180 BF5255A1-1417-432B-AC64-BF132A0BCC65 Family Rhinopteraspididae Novitskaya, 2004 Genera included. Errivaspis Blieck, 1984 , Rhinopteraspis Jaekel, 1919 , Althaspis Zych, 1931 , Brachipteraspis Brotzen, 1936 , Pavloaspis Voichyshyn, 1999 .