Table 2 Summary of species means, standard deviations (SD), and sample numbers (N) of thirteen Callithrix morphological traits. “Cm” refers to centimeters, “g” to grams, “mm” to millimeters, “A” to C. aurita, “G” to C. geoffroyi, “P” to C. penicillata, and J to C. jacchus

BODY:Body Length (cm)

27

21.9

1.4

14

22.2

1.9

29

19.9

1.6

52

20.9

2.7

FEMUR:Femur Length (cm)

27

6.5

0.6

14

6.3

0.5

29

5.5

0.7

54

5.8

0.6

FO: Fronto-Occipital Distance (mm)

27

42.6

2.9

14

40.2

2.6

24

39.7

2.2

50

39.8

2.1

FOOT: Foot Length (mm)

24

61.1

5.6

14

55.4

3.2

27

54.7

4.6

54

54.2

3.7

FOREARM: Distance Wrist to Elbow (cm)

27

5.2

0.4

14

4.8

0.3

29

4.5

0.4

54

4.6

0.5

HAND: Distance Wrist to Tip of Longest Finger (mm)

21

30.5

15.1

13

36.3

2.7

28

35.4

3.3

48

35.2

4.0

HUMERUS: Humerus Length (cm)

26

5.4

0.8

14

5.3

0.3

29

4.7

0.5

54

4.6

0.7

IC: Intercranial Distance (mm)

27

33.1

1.3

14

30.2

1.9

29

27.4

2.2

54

28.4

1.6

JAW: Width of the Jaw (mm)

23

23.7

3.9

14

25.7

3.1

29

22.2

2.9

52

22.9

2.3

TAIL: Tail Length (cm)

26

32.3

1.7

13

30.7

3.2

24

27.4

2.9

51

27.7

3.2

TIBIA: Tibia Length (cm)

27

7.2

0.5

14

7.1

0.3

29

6.6

0.6

54

6.5

0.6

WEIGHT: Weight (g)

25

440.6

66.8

14

386.2

63.0

30

322.6

65.2

54

308.4

68.1

ZYG: Maximal zygomatic breadth (mm)

23

31.4

2.6

14

30.1

3.3

29

28.7

1.5

51

28.6

2.1