Myogenesis in the basal bilaterian Symsagittifera roscoffensis (Acoela).(Research)(Report)

Acoela, supposedly the earliest recent bilaterian offshoot, show only few morphological characters to infer their evolution and their phylogenetic relationships [1]. They are acoelomate, gutless ciliated worms mainly from marine habitats and have traditionally been assigned to the taxon Turbellaria within Platyhelminthes [2]. At present, three major flatworm-like clades are often considered valid, namely Platyhelminthes, Nemertodematida and Acoela, of ...