
Figure 1. Previous Pteraspidiformes phylogenies. A, Blieck's (1984) Pteraspidiformes phylogeny for all the then-known taxa. B, Janvier's (1996) phylogeny for the major clades of Pteraspidiformes. C, Ilyes & Elliott's (1994) phylogeny for the Western USA taxa. D, Perǹegre's (2002) phylogeny to determine the position of Doryaspis. E, Perǹegre & Goujet's (2007) phylogeny to determine the position of Gigantaspis. F, Perǹegre & Elliott's (2008) most recent Pteraspidiformes phylogeny with the identification of major families. The Psammosteidae are highlighted when included in an analysis.
Published as part of Randle, Emma & Sansom, Robert S., 2017, Exploring phylogenetic relationships of Pteraspidiformes heterostracans (stem-gnathostomes) using continuous and discrete characters, pp. 583-599 in Journal of Systematic Palaeontology 15 (7) on page 586, DOI: 10.1080/14772019.2016.1208293, http://zenodo.org/record/10883180
Biodiversity, Taxonomy
Biodiversity, Taxonomy
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