Eubrachyurans, or ‘higher’ true crabs, are the most speciose group of decapod crustaceans and have a rich fossil record extending into Early Cretaceous. However, extant families first found in Palaeogene, particularly Eocene. Unfortunately, fossils many early eubrachyuran groups often fragmentary, only few studies combined extinct taxa phylogenetic context using different optimality criteria. H...