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Table 1 Measurements of theropod tracks PC-TI1-PC-TI18 from Pingchuan tracksite, Gansu Province, Northwest China. PC-TI1-PC-TI14 were from the Pingchuan assemblage A; PC-TI15 was from the Pingchuan assemblage B; PC-TI16-PC-TI18 were from the Pingchuan assemblage C

From: The first theropod tracks from the Middle Jurassic of Gansu, Northwest China: new and rare evidence of quadrupedal progression in theropod dinosaurs

Number

ML (cm)

MW (cm)

II-IV

ML/MW

M

PC-TI1

19.6

8.1

31°

2.4

0.76

PC-TI2

11.0

7.0

44°

1.6

0.32

PC-TI3

12.6

8.2

46°

1.5

0.43

PC-TI4

11.0

7.4

55°

1.5

0.51

PC-TI5

17.1

10.1

44°

1.7

0.50

PC-TI6

11.4

13.8

104°

0.8

0.40

PC-TI7

12.9

9.0

57°

1.4

0.55

PC-TI8

8.9

12.1

90°

0.7

0.28

PC-TI9

17.0

8.5

35°

2.0

0.51

PC-TI10

12.2

6.7

42°

1.8

0.56

PC-TI11

16.3

8.2

40°

2.0

0.69

PC-TI12

11.5

6.5

38°

1.8

0.42

PC-TI13

14.1

6.6

37°

2.1

0.73

PC-TI14

14.5

10.5

60°

1.4

0.52

PC-TI15

12.0

8.5

53°

1.4

0.42

PC-TI16

> 8.8

7.7

–

–

0.54

PC-TI17

> 8.3

7.9

–

–

0.39

PC-TI18

> 6.2

6.5

–

–

0.43

  1. Notes: ML Maximum pes track length, MW Maximum pes track width (measured as the distance between the tips of digits II and IV), II-IV Angle between digits II and IV, M Mesaxony