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Figure 1 | BMC Developmental Biology

Figure 1

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

Figure 1

Marisa cornuarietis individuals after hatching with different types of shells. Arrows indicate the mantle edge, “partial” shells are encircled in white; A: “sluggish” snail without an external mantle and with an internal shell (about 3 weeks old); B, C: snails with “partial” shells, D: snail with an almost normally developed “partial” shell; E: normally developed snail from the control; H: head, SH: shell, VS: visceral sac.

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BMC Developmental Biology

ISSN: 1471-213X

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