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Image: Mouse and Snake Embryos

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Description: Excerpt of figure from “From Lizard to Snake; Behind the Evolution of an Extreme Body Plan” (Woltering, 2012), showing the embryo of a snake and mouse to highlight the different in body plan. The mouse is a day 12 post fertilization embryo and the snake (Corn snake, Pantherophis guttatus), is around 2 days post ovo-positioning. The Corn snake is not a basal snake, and thus does bot exhibit hind limb bud formation.
Title: Mouse and Snake Embryos
Credit: "From Lizard to Snake; Behind the Evolution of an Extreme Body Plan"[1]
Author: Joost M Woltering
Usage Terms: Creative Commons Attribution 2.5
License: CC BY 2.5
License Link: https://creativecommons.org/licenses/by/2.5
Attribution Required?: Yes

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