The Proetida likely represent the only trilobite surviving clade past the Devonian mass extinction event(s). Though members of order Proetida have long been studied, the global phylogenetic relationships across this pivotal time are still unresolved. I used a Bayesian phylogenetic approach to construct a subordinal level tree for members within superfamily Proetoidea. Two models, a relaxed and strict clock model, were compared and were used to assess past reconstructions of clades within the order. The trees from both models highlight key relationships among proetides across the Devonian and show paraphyly in groups which have been considered monophyletic in the past. Trees from both models also suggest that major groups, such as the genus Gerastos and the family Phillispidae (which represent the most diverse post-Devonian proetide group under current taxonomic schemes) are polyphyletic. This in turn suggests, in a paleobiological context, a more complex pattern of survivorship over the Late Devonian than previously suggested as well as pervasive parallelisms towards certain "Gerastos" or “phillipsid” morphotypes.