Boxplot showing the distribution of the angle between the lateral margins of the scapular facet and the glenoid
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 an indeterminate hadrosaurid coracoid (TMP 80.29.1). Grey horizontal lines delimit character states.