Boxplot showing the distribution of the ratio between the proximodistal length of the deltopectoral crest
and the proximodistal length of the humerus for a sample of iguanodontoidean ornithopods. The inserted smaller graph shows the Bayesian
information criterion (BIC) for various numbers of clusters in which the data can be classified. The photograph shows how the two variables
of this raio were measured, exemplified in a humerus of Gryposaurus latidens (AMNH 5465). Grey horizontal lines delimit character states.