Smith JPS, Tyler S 1986 (citation)- Significance of frontal organs in Acoelomorpha. Electron microscopy.
Ultrastructure and phylogeny discussed. Illustrations and sections. The following taxa were looked
considered:
Paratomellidae
Hesiolicium inops
Paratomella sp.
Diopisthoporidae
Diopisthoporus 'gymnopharyngeus'
Otocelidae
Otocelis sp.
Mecynostomidae
Paedomecynostomum sp.
Convolutidae
Convoluta 'pulchra'
Solenofilomorphidae
Solenofilomorpha funilis
Nemertodermatida
Flagellophora cf apelti
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