Table 1 Measurements for Psittacosaurus lujiatunensis-Repenomamus robustus pair (WZSSM VF000011) in mm.

From: An extraordinary fossil captures the struggle for existence during the Mesozoic

Measurement

Psittacosaurus lujiatunensis

Repenomamus robustus

Basal skull length (snout to occipital condyle)

157.5

79.5

Skull length (maximum)

179.7

90.8

Skull width (maximum)

156

51.2

Humerus length

78.6

56.7

Humerus minimum shaft circumference

13.6

11.4

Femur length

137.7

58.8

Femur minimum shaft circumference

17.7

7.3

Trunk length (atlas to posterior sacral vertebra)

564.8

315.2

Tail length (as preserved)

473.9

73.3

Total body length (including skull)

1196.1

467.9