Monophyletischer Stammbaum der Mollusken. 



§ 281. Stammbaum der Mollusken. 



513 



Grastropoda 



Frosobranchia 



Heteropoda 



Saccopallia 



Toxiglossa 



lanthina 

 Rhachiglossa 



OpisthobrancMa 



Pteropoda 



Nudibranchia 

 Ascoglossa 



Palmonata 



Stylommatophora 



Taenioglossa 



Ctenobranchia 

 Monotocardia 



Basommatopbora 



Tectibranchia 

 Actaeon 



Rhipidoglossa 

 Diotocardia 



Prococblides 



Ampliiiieura 



Chitonida 



Placophora 

 Solenogastres 

 Chaetodermida 



Cephalopoda 



Decolena 



Loligaria 



Octolena Sepiaria 



Octopodaria 



Spirularia ^ Nautilus 



Ammonitaria 



Nautolena 



Belemnaria 



/ Aulacoceras 

 Bactrites / 



/ / 



Orthoceras 



Teutholena 

 Orthocerades 



Endocerades 



Connlarida 



( / 



Archolena 

 Archinautes 



Acephala 



Lamellibranchia 

 Septibranchia 



/ 

 Elatobranchia 



Ptychobranchia 



/ 



Filibranchia 

 Nuculida 



Scaphopoda 



Euscaphopoda 



Proscaphophoda 



Neomenida 

 Solenogastres 



Amphineura 



Promollusca 



I 



Conchelmintlies 



Turbellaria 



Haeckel, Systematisehe Phylogenie. 



II, 33 



