You cannot memorize 50,000 years of evolution. You need a constant reference.
A focused, practical anatomy guide for 3D artists, covering structure, function, proportion, and surface detail to produce believable characters and creatures. Emphasizes observation, simplifying complex forms, and translating anatomy into sculpting, modeling, rigging, and texturing workflows. Anatomy For 3d Artists The Essential Guide For Cg
Pro Tip: Import a medical-grade skeleton OBJ into your viewport (Sketchfab has excellent free options). Overlay it with your character model at 50% opacity. Turn your model around. Do the knees, wrists, and ankles line up? You cannot memorize 50,000 years of evolution