FIGURE 19. Aspect ratio of aperture of Mellopegma and Eurekapegma through time. Aspect ratio measured by dividing the length of aperture by the average of its maximal and minimal width.
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FIGURE 19. Aspect ratio of aperture of Mellopegma and Eurekapegma through time. Aspect ratio measured by dividing the length of aperture by the average of its maximal and minimal width.
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