The Stages of Human Embryonic Development

Stage 14 embryos are characterized by the invagination of the lens disc and the presence of projecting upper limb buds that curve ventrally but do not yet display a distinct hand plate.

The greatest length of stage 14 embryos is in the range of 5 to 8 mm but most are in the 6 to 7 mm range. They have an estimated postfertilization age of around 33 days