Checklist for CATENULIDA Meixner, 1924
Kingdom ANIMALIA
Animals
Phylum PLATYHELMINTHES
Flatworms
Class TURBELLARIA
Free-living Flatworms
Order CATENULIDA Meixner, 1924
Family CATENULIDAE Graff, 1905
Family CHORDARIIDAE Marcus, 1945
Family TYRRHENIELLIDAE Riedl, 1959
Order NEMERTODERMATIDA
Order ACOELA
Order HAPLOPHARYNGIDA
Order MACROSTOMIDA
Order PROLECITHOPHORA
Order LECITHOEPITHELIATA
Order SERIATA
Order DALYELLIOIDA
Order TYPHLOPLANOIDA
Order POLYCLADIDA
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