Table 1. Length and breadth measurements of 12 footprints from Happisburgh showing estimated foot area, stature, body mass (from footprint area), body mass (from footprint length) and foot index (width:length ratio ×100).

Print	Footprint length (mm)	Footprint breadth (mm)	Footprint area (mm2)	Stature (m)	Body mass (kg) from footprint area	Body mass (kg) from footprint length	Foot index
3	160	80	12800	1.07			50
5	140	60	8400	0.93			43
8	240	110	26400	1.60	53	48	46
11	250	90	22500	1.67	48	50	36
12	200	90	18000	1.33			45
18	210	80	16800	1.40			38
20	150	50	7500	1.00			33
21	180	70	12600	1.20			39
33	260	90	23400	1.73	49	52	35
38	190	70	13300	1.27			37
43	150	50	7500	1.00			33
45	160	60	9600	1.07			38

The regression used from footprint area is Mass = 23.61+(0.11 × footprint area) [15]. The regression used from footprint length is Mass = 4.71+(1.82× footprint area) [15].