Jan van Calcar

Iohann van Calcar by Maximilian Franck
Jan van Calcar is assumed to have been the illustrator of Vesalius's Fabrica which contained many intricately detailed drawings of human dissections, often in allegorical poses.

Jan Steven van Calcar (Italian: Giovanni da Calcar, Latin: Ioannes Stephanus Calcarensis) (c. 1499–1546) was a Holy Roman Empire-born painter in the Kingdom of Naples.