Die Keimblätter-Theorie und der Stammbaum dos Thierreiches. 



465 



Vertebrata 



Mammalia 



Arthropoda 



Insecta 

 Myriapoda : Arachnida 

 Echinodernia 1 | 



Holothuriae | | | 



j Crinoida 



Echinida 



I ' Annelida 



Aves 

 Reptilia 



Protracheata 



I Crustacea 



Amniota 



1 

 Amphibia 



I Amphioxus 

 Pisces I 



Jlollusca 



Cephalopoda 



I Cochlides 



.1 _ I. 

 I Lamellibranchia 



AsTEKiDA i Kotatoria i Nauplius 



Gephyrea 



Phracthelminthes 



COLELMINTKES 



Sagitta 



Nematoda 



■ [^_ _ J Otocaudia 



AcRANiA Spirobranchia 



Tunicata I 



I Bryozoa | 



Promollusca 



HiMATEOA 



Vernies (Coeloiuati) 



(Würmer mit Leibeshöhle) 



Cestoda 



I 

 Trematoda 



I 

 Turbellaria 



Vernies (Äcoelomi) 



(Würmer ohne Leibeshöhle) 



I 



Aächelminthes 

 Prothelmis 



Zoophyta 

 Acalephae Spongiae 



Ctenophora Coralla Calcispongiae 



I I Fibrospongiae 



Medusae Olynthus | 



I ChalynthuB 



Hydroida . 1^ 



Hydra I Cordylophora Myxospougiae 



Arehydra 



Archispongia 



(Onto^enie : Ascula) 

 Protasfus 



Diatomea 



Protista 



Rhizopoda 



(ilastraea (Ontogenie: Gastrula) 

 Protnzoa | 



Infusoria Planulata (Ontogenie: Planula) 

 Gregarinae 



Myxomycetes INoctilucae' Synamoebae (Ontogenie: Morula) 

 Catallacta j I ^ '■ 



Aniuebne (Ontogenie: Ovulum) 



Flagellatai 



flouera 



Amoebae 



1 

 .Yluneru 



.llonera (^Ontogenie: Mouerula) 



