Stammbaum der Amphibien. 



275 



§ 257. Stammbaum der Amphibien. 



Batrachia 



Callulaeformia Hylaeformia 



\ / 



Bufoniformia Ranaeformia 



Stegocephala\ / i 



Labyrinthodonta \ Agiossa / / 



Mastodonsauria \ \ / / Sauromorpha 



\ \|/ /  / 



Probatrachia Microsauria 



[Amniota ~| 

 Proreptilia J 



Aiithracosauria 



\ 



Rbachitouia 



Nectrida 



Embolomera 



Ganocephala 



Archego.sauria 



Fisces 



Teleostei 



Physoclibti 



Salamandrina 



Derotrema 



j 



U r o d e 1 a 



Phanerobranchia 

 Palurodela 



Branchiosauria 



Progonamphibia 



Peromela 



Sipbonopida 



Epicrida 

 Neocaeciliae 



Aistopoda 

 Falacaeciliae 



Dipneusta 



Neodipneusta 



Protopterina 



Pbysostomi 



Ganoides 

 Osteiidermi 



Stegocephala 



Protainpbibia 

 Euganoides 



Paladipneusta 



Ceratodina 



Selachii 

 Plagiostomi 



Pleuracanthi 



§ 217. Stammgrappe 

 aller Gnathostomen 



Froganoides 



I Froselachii (Ichthygonides) 



18* 



