Reconstruction of the Chinese stegosaur Tuojiangosaurus multispinus
. Here the animal is depicted ingesting rock fragments. Many archosaurs, including most dinosaurs (extant or extinct), have gastric mill in which ingested rock fragments (gastroliths) help in the process of grinding food.
I started to draw this artwork about two months, but due to me working on a couple of commissioned projects, I only recently got the chance to finish it.
Medium: Pencils (2B and 5B)
Reference: Scott Hartman's
skeletal drawing of Tuojiangosaurus multispinus [link]