Phylogenetic hypothesis of Pseudobranchiomma and related taxa. A Strict consensus of six most-parsimonious trees after analyses of morphological data (33 characters) and 26 members of Sabellidae rooted with Pseudopotamilla. Jack-knife support values are given (>50) B Strict consensus of three most parsimonious tree after implementation of implied weighting (constant of concavity k = 7) C Tree after maximum likelihood analyses of mitochondrial and nuclear dataset. Bootstrap values on nodes if >50; scale: average of nucleotide substitutions per site D Single most-parsimonious tree after analyses of the combined morphological and molecular datasets (12 taxa and 2239 characters); Jack-knife support values are given (>50).