Locomotion and Functional Spine Morphology of the Heart Urchin Brisaster fragilis, with Comparisons to B. latifrons
Figure 3
Plastron spines of Brisaster fragilis. ((a) and (b)) Stereomicroscope images; ((c) and (d)) SEM micrographs; ((a) and (c)) mid-section view showing the fan-like arrangement of spines; ((b) and (d)) close-up view of spatulate spines and tubercles.
