XXIII. 
Stammbaum der Krustenthiere oder Orustaceen. 
585 
Malacostraca. Pauzerkrekse. 
Brachyura 
Isopoda 
Anomura 
Macrura Stomatopoda 
Decapoda 
j Schizopoda 
Cumacea 
Laemodipoda 
Amphipoda 
Anisopoda 
Edriophtlialma 
Podophthalma 
Gigantostraca 
Eurypterida Pterygotida 
Xiphosura 
Limulida 
I 
Hemiaspida 
Schizopoda 
Malacostraca 
Rhizocephala 
Siphonostoma 
Leptocarides 
Nebalia 
Caiymenida 
Asaphida 
Pygidiata 
Trilohita 
Merostoma 
Cladocera 
Cirripedia 
Pectostraca 
Eucopepoda 
Copepoda 
Palacarides 
Leptostraca 
Phyllopoda 
Ostra- 
coda 
Brancliiopoda 
Entomostraca 
Aspidonia 
Schildthiere 
Caridonia 
Krebsthiere 
Archiaspides 
Archicarides 
Annelida- Ringelthiere 
Archannelida 
I 
Plato des 
Gastraea 
