Table 2. Relevant data of Zhanghenglong and detached intervals of the datasets consisting of the values of most hadrosauroids and some basal iguanodontians on selected measurement attributes^*.

Measurement attribute (XMDFEC V0013 and V0014)	Value of Zhanghenglong	Interval related to basal hadrosauroids	Interval related to hadrosaurids
1. ratio between maximum dorsoventral height and anteroposterior lengthof maxilla	0.37	up to 0.35	greater than 0.35
		C01: [0.26, 0.33]	C02+ C03: [0.36, 0.57]
2. ratio between anteroposterior length of ectopterygoid shelf and that ofmaxillary tooth row	0.37	up to 0.35	greater than 0.35
		C01: [0.20, 0.33]	C02: [0.38, 0.49]
3. angle between ectopterygoid ridge and ventral margin of posteriorportion of maxilla	16°	greater than 10°	up to 10°
		C01: [13°, 31°]	C02: [0°, 9°]
4. ratio between anteroposterior length of edentulous region and that oftooth row of dentary	0.17	up to 0.20	greater than 0.20
		C01: [0.10, 0.18]	C02: [0.21, 0.60]
5. angle between medial border of dentary symphyseal process and lateralsurface of dentary ramus	13°	greater than 15°	up to 15°
		C02: [18°, 28°]	C01: [8°, 13°]
6. ratio between dorsoventral depth of scapular neck and maximum dorsoventralheight of scapular proximal end	0.50	up to 0.59	greater than 0.59
		C01: [0.38, 0.58]	C02: [0.60, 0.76]

*the boundary value between the two intervals was estimated to be the average value of the greatest value from the former component with low values and the least value from the latter component with high values.

C, the component resulting from MCA of the database consisting of the sample means of all measured taxa.