The Stages of Human Embryonic Development

Stage 16 scaled logo  

Stage 16 embryos have a greatest length of 8 to 11 mm and an estimated postfertilization age between 37 and 40 days. The lower limb bud develops into three distinct regions, corresponding to thigh, leg and foot while in the upper limb bud the digital plates develops. More advanced stage 16 specimens have visible retinal pigmentation.

Stage 16 - left lateral view of Carnegie specimen #8098