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Figure 5 | BMC Developmental Biology

Figure 5

From: External and internal shell formation in the ramshorn snail Marisa cornuarietisare extremes in a continuum of gradual variation in development

Figure 5

Images of platinum-plus-heat-exposed embryos. Left lateral views, circles highlight the portion of calcium carbonate that was secreted before the re-start of the differential growth of the shell gland-mantle edge-complex; A: 7-day-old embryo; B: 10-day-old embryo; CN: ctenidium; F: foot; H: head; MTE: mantle edge; SH: shell; VS: visceral sac.

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