Table 1. Measurements of the fore limb elements of Haestasaurus.

Element	Dimension	Measurement (in mm)
Humerus	Length	599
	Maximum transverse width of proximal end	268
	Maximum anteroposterior width of proximal end	133
	Distance from proximal end to most prominent point of deltopectoral crest	212
	Distance from proximal end to point where deltopectoral crest disappears	260
	Transverse width of midshaft	113
	Anteroposterior width of midshaft	78
	Circumference of midshaft	307
	Maximum transverse width of distal end	211
	Maximum anteroposterior width of distal end	130
Ulna	Length	421
	Length of anteromedial process of the proximal end	146
	Length of the anterolateral process of the proximal end	113
	Transverse width at midshaft	63
	Anteroposterior width at midshaft	50
	Circumference at midshaft	178
	Maximum transverse width of distal end	68
	Maximum anteroposterior width of distal end	106
Radius	Length	404
	Maximum transverse width of proximal end	100+
	Maximum anteroposterior width of proximal end	88
	Transverse width at midshaft	61
	Anteroposterior width at midshaft	42
	Circumference at midshaft	167
	Maximum transverse width of distal end	113
	Maximum anteroposterior width of distal end	74

Measurements of the fore limb elements of Haestasaurus becklesii (NHMUK R1870). N.B. ‘midshaft’ refers to the point on each element, at approximately midlength, where the shaft is most slender.