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Star Republic: Guide for Biologists

Comparison of embryonic development stages

Carnegie Stage Comparison. Development time in days.

Species/Stage

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

Baboon

23

25

27

28

29

30

31

33

35

37

39

41

43

45

47

Chicken

1

1.5

2

2.25

2.5

3

3.25

3.75

4.75

5.5

6.25

7.25

7.75

8.5

10

Guinea Pig

14.5

15

15.5

17

18

19

20

21

22

23

24

25

26

27

29

Hamster

10

10.5

11

11.5

12

12.5

13

13.5

14

14.5

15

15.5

16

16.5

17

Human

20

22

24

28

30

33

36

40

42

44

48

52

54

55

58

Marmoset

57

60

64

67

74

Monkey

21

22

25

28

29

30

32

34

36

37

38

40

42

44

46

Mouse

9

9.5

10

10.5

11

11.5

12

12.5

13

13.5

14

14.5

15

15.5

16

Pig

14

15

16

17

18

19

20.5

21.5

23

24

25.5

27.5

29

30.5

32.5

Rabbit

8

8.5

9.5

10.5

11

12

12.5

13.5

14

14.5

15.5

16

16.5

17

18

Rat

10.5

11

11.5

12

12.5

13

13.5

14

14.5

15

15.5

16

16.5

17

17.5

Sheep

15

16

17.5

18.5

19.5

20.5

22

23

24.5

25.5

27.5

29.5

30

33