Fig. 1
From: An embryological perspective on the early arthropod fossil record
The phylogenetic hypothesis of Panarthropoda used for this work. The phylogeny is compiled and simplified from several sources, most notably [8], with some modifications. Node names in italics are individual species. Names in capitals are extant taxa. All others are fossil taxa. The phylogeny is divided into three main groups: lower stem taxa, upper stem taxa and crown group Arthropoda. Some members of the “Lobopodia” probably belong in the arthropod lower stem (e.g., Jianshanopodia, Megadictyon), but due to the lack of resolution in that group, and because they are outside the scope of this analysis, the stem group is marked as beginning with Kerygmachela