Carnegie Stage 14 Definition

Age is approximately 32 postovulatory days

Length is approximately 5-7 mm

External Features Include: elongated and tapering upper limb buds, invagination of the lens disc but with open lens pit.

Internal Features: future cerebral hemispheres and cerebellar plates begin to be visible.

(O'Rahilly R and Muller F [1987] Developmental Stages in Human Embryos. Carnegie Institute, Washington, Publication no. 637)