Figure 2.

Relationship between the femur length (as proxy for body size) and the reconstructed volume of the body cavity in (a) synapsids and (b) diapsids. Closed symbols and full regression lines (cf. Table 1) indicate herbivores (except for the Amphibia), open symbols and dotted line indicate carnivores. Skeletal models with the estimated convex hull of the torso depicted include: (a, from left to right) Lycaenops, Moschops, Nasalis, Panthera leo, Bos gaurus; (b, from left to right) Varanus, Euoplocephalus, Giraffatitan, Stegosaurus, Iguanodon. Regression lines in (a) for mammals, in (b) for all diapsids.