Image: How the Turtle Gets its Shell
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Original image (SVG file, nominally 2,122 × 1,568 pixels, file size: 54 KB)
Description: At stage 16/17, a turtle embryo in the egg is developing its shell. In cross-section, the ribs are seen to be growing sideways into the carapace bud, unique to the group, rather than downwards, so as to support the shell.
Author: Ian Alexander
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC-BY-SA-3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0/
Attribution Required?: Yes
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