About Carnegie Stage 16
Most embryos at stage 16 are approximately 37 postovulatory days old and measure 11-14 mm in length. Distinguishing criteria for this stage include the external appearance of retinal pigment, the nasal pits face ventrally, pharyngeal arch 2 is more massive and conspicuous than arch 3, auricular bumps begin to appear, and the thigh, leg, and foot can be distinguished in the lower limb.
MRI Slice Selector
Sample Animations
Rotation Animation

(650 KB QuickTime file)

Neural Tube Rotation

(650 KB QuickTime file)

Psuedo Timelapse

(650 KB QuickTime file)

Optical Images
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© 2001 Bradley R. Smith