XXII. 
Stammbaum der Sternthiere (Echinodermen). 
567 
Neuer Stammbaum der Sternthiere (1896). 
Asteridea 
Seesterne 
Colasterida 
Crinoidea 
Seelilien 
Neocrinida 
Palasterida 
Blastoidea 
Seeknospen 
Parblastoida 
PalacriuidaX 
Eublastoida 
Glyptocystida 
Cystoidea 
Seeäpfel 
Megaplacta 
Echinidea 
Seeigel 
Autechinida 
Ophiodea 
Seestrahlen 
Colophiura 
/ / Palechinida 
Palophiura 
Cystechinida 
Amphoronia 
(Amphorulea 
radialia) 
Palaeooystida 
Thuroidea 
Seegurken 
Actinopoda 
Paractinota 
Microplacta 
X 
Amphoralia 
(. Amphoridea 
bilateralia ) 
Anomocystida 
Pomocystida 
Fentactaea 
Amphoridea 
Seeurnen 
I 
Amphoraea 
I 
Rotatoria 
I 
Gastraea 
