DA VIES ET AL.: OTOLITH ULTRASTRUCTURE OF SMOOTH AND BLACK OREO 



a 



Figure 4a. —Broken smooth oreo otolith reveals the spherical primordium (PM) and nucleus (N) and the surround- 

 ing radial crystal growth. Scale bar = 0.1 mm. 

 b.— Epitaxial crystal development in the broken otolith. Scale bar = 0.1 mm. 



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