Anatomia Artistica Michel Lauricella -

George Bridgman is famous for his cubist, "faceted" blocks. Lauricella uses a more tubular, cylindrical approach. His hands look like a bundle of sausages (the phalanges) attached to a wedge (the palm). This is much easier for beginners to grasp and rotate mentally.

(In his dedicated Morpho: Hands and Feet book, or the relevant sections). anatomia artistica michel lauricella