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a Iceman thoracic spine X-ray which shows the thoracic vertebrae with 11 normal sized right and left ribs. The location of thoracic (T) vertebrae 1, 11 and 12 are shown as T1, T11, T12, b the X-ray of the lower thoracic spine and upper lumbar spine known as the thoracolumbar junction is shown to identify origin and position of the right thoracic 12 vestigial rib
