f99a56df_Intertabrae_Chart__7
[0] Phylum [1] Circulatory [2] Respiratory [3] Digestive [4] Reproductive [5] Excretory [6] Nervous [8] Muscular [7] 
Skeletal
S k e l e t a l
S p i c u l e s
N o n e
S o m e c o n t a i n s h e l l s
E x o s k e l e t o n m a d e o f c h i t i n
Intertabrae Chart
7