Webster’s Revised Unabridged Dictionary · 1913
Proatlas
Pro·at′las (prō·ăt′las), n. [Pref. pro- + atlas.] (Anat.) A vertebral rudiment in front of the atlas in some reptiles.
Webster’s Revised Unabridged Dictionary · 1913
Pro·at′las (prō·ăt′las), n. [Pref. pro- + atlas.] (Anat.) A vertebral rudiment in front of the atlas in some reptiles.