What is the specific anatomical feature referenced by the Latin word 'marsupium' in the springbok's scientific name?

Answer

A fold-like pocket of skin on the back

The specific epithet *marsupialis* refers to a unique fold of skin along the midline of the springbok's back, which can be erected to reveal white hair, serving as a visual display, not a reproductive pouch.

What is the specific anatomical feature referenced by the Latin word 'marsupium' in the springbok's scientific name?
mammalclassificationmarsupialSpringbok