1. Japanese pipistrelle (mammal—bat) Pipistrellus abramus Source: Tokita, M. 2006. Normal embryonic development of the Japanese pipistrelle, Pipistrellus abramus. Zoology 109: 137–147. Stage A

2. Japanese pipistrelle (mammal—bat) Pipistrellus abramus Source: Tokita, M. 2006. Normal embryonic development of the Japanese pipistrelle, Pipistrellus abramus. Zoology 109: 137–147. Stage B

3. Japanese pipistrelle (mammal—bat) Pipistrellus abramus Source: Tokita, M. 2006. Normal embryonic development of the Japanese pipistrelle, Pipistrellus abramus. Zoology 109: 137–147. Stage C

4. Japanese pipistrelle (mammal—bat) Pipistrellus abramus Source: Tokita, M. 2006. Normal embryonic development of the Japanese pipistrelle, Pipistrellus abramus. Zoology 109: 137–147. Stage D

5. Japanese pipistrelle (mammal—bat) Pipistrellus abramus Source: Tokita, M. 2006. Normal embryonic development of the Japanese pipistrelle, Pipistrellus abramus. Zoology 109: 137–147. Stage E

6. Japanese pipistrelle (mammal—bat) Pipistrellus abramus Source: Tokita, M. 2006. Normal embryonic development of the Japanese pipistrelle, Pipistrellus abramus. Zoology 109: 137–147. Stage F

7. Japanese pipistrelle (mammal—bat) Pipistrellus abramus Source: Tokita, M. 2006. Normal embryonic development of the Japanese pipistrelle, Pipistrellus abramus. Zoology 109: 137–147. Stage G

8. Japanese pipistrelle (mammal—bat) Pipistrellus abramus Source: Tokita, M. 2006. Normal embryonic development of the Japanese pipistrelle, Pipistrellus abramus. Zoology 109: 137–147. Stage H

9. Japanese pipistrelle (mammal—bat) Pipistrellus abramus Source: Tokita, M. 2006. Normal embryonic development of the Japanese pipistrelle, Pipistrellus abramus. Zoology 109: 137–147. Stage I

10. Japanese pipistrelle (mammal—bat) Pipistrellus abramus Source: Tokita, M. 2006. Normal embryonic development of the Japanese pipistrelle, Pipistrellus abramus. Zoology 109: 137–147. Stage J

11. Fieldfare (bird) Turdus pilaris Source: Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage A

12. Fieldfare (bird) Turdus pilaris Source: Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage B

13. Fieldfare (bird) Turdus pilaris Source: Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage C

14. Fieldfare (bird) Turdus pilaris Source: Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage D

15. Fieldfare (bird) Turdus pilaris Source: Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage E

16. Fieldfare (bird) Turdus pilaris Source: Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage F

17. Fieldfare (bird) Turdus pilaris Source: Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage G

18. Fieldfare (bird) Turdus pilaris Source: Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage H

19. Fieldfare (bird) Turdus pilaris Source: Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage I

20. Fieldfare (bird) Turdus pilaris Source: Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage J

21. Quail (bird) Coturnix japonica Source: Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage A

22. Quail (bird) Coturnix japonica Source : Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage B

23. Quail (bird) Coturnix japonica Source : Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage C

24. Quail (bird) Coturnix japonica Source : Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage D

25. Quail (bird) Coturnix japonica Source : Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage E

26. Quail (bird) Coturnix japonica Source : Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage F

27. Quail (bird) Coturnix japonica Source : Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage G

28. Quail (bird) Coturnix japonica Source : Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage H

29. Quail (bird) Coturnix japonica Source : Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage I

30. Quail (bird) Coturnix japonica Source : Blom, J., and C. Lilja. 2005. A comparative study of embryonic development of some bird species with different patterns of postnatal growth. Zoology 108: 81–95. Stage J

31. African house snake (reptile) Boaedon fuliginosus Source: Bobak, S., E. Dichter, and H. Mistry. 2012. A developmental staging series for the African house snake, Boaedon (Lamprophis) fuliginosus. Zoology 115: 38–46. Stage A

32. African house snake (reptile) Boaedon fuliginosus Source: Bobak, S., E. Dichter, and H. Mistry. 2012. A developmental staging series for the African house snake, Boaedon (Lamprophis) fuliginosus. Zoology 115: 38–46. Stage B

33. African house snake (reptile) Boaedon fuliginosus Source: Bobak, S., E. Dichter, and H. Mistry. 2012. A developmental staging series for the African house snake, Boaedon (Lamprophis) fuliginosus. Zoology 115: 38–46. Stage C

34. African house snake (reptile) Boaedon fuliginosus Source: Bobak, S., E. Dichter, and H. Mistry. 2012. A developmental staging series for the African house snake, Boaedon (Lamprophis) fuliginosus. Zoology 115: 38–46. Stage D

35. African house snake (reptile) Boaedon fuliginosus Source: Bobak, S., E. Dichter, and H. Mistry. 2012. A developmental staging series for the African house snake, Boaedon (Lamprophis) fuliginosus. Zoology 115: 38–46. Stage E

36. African house snake (reptile) Boaedon fuliginosus Source: Bobak, S., E. Dichter, and H. Mistry. 2012. A developmental staging series for the African house snake, Boaedon (Lamprophis) fuliginosus. Zoology 115: 38–46. Stage F

37. African house snake (reptile) Boaedon fuliginosus Source: Bobak, S., E. Dichter, and H. Mistry. 2012. A developmental staging series for the African house snake, Boaedon (Lamprophis) fuliginosus. Zoology 115: 38–46. Stage G

38. African house snake (reptile) Boaedon fuliginosus Source: Bobak, S., E. Dichter, and H. Mistry. 2012. A developmental staging series for the African house snake, Boaedon (Lamprophis) fuliginosus. Zoology 115: 38–46. Stage H

39. African house snake (reptile) Boaedon fuliginosus Source: Bobak, S., E. Dichter, and H. Mistry. 2012. A developmental staging series for the African house snake, Boaedon (Lamprophis) fuliginosus. Zoology 115: 38–46. Stage I

40. African house snake (reptile) Boaedon fuliginosus Source: Bobak, S., E. Dichter, and H. Mistry. 2012. A developmental staging series for the African house snake, Boaedon (Lamprophis) fuliginosus. Zoology 115: 38–46. Stage J

41. House mouse (mammal) Mus musculus Source: EMAP eMouse Atlas Project. http://www.emouseatlas.org. Stage A

42. House mouse (mammal) Mus musculus Source: EMAP eMouse Atlas Project. http://www.emouseatlas.org. Stage B

43. House mouse (mammal) Mus musculus Source: EMAP eMouse Atlas Project. http://www.emouseatlas.org. Stage C

44. House mouse (mammal) Mus musculus Source: EMAP eMouse Atlas Project. http://www.emouseatlas.org. Stage D

45. House mouse (mammal) Mus musculus Source: EMAP eMouse Atlas Project. http://www.emouseatlas.org. Stage E

46. House mouse (mammal) Mus musculus Source: EMAP eMouse Atlas Project. http://www.emouseatlas.org. Stage F

47. House mouse (mammal) Mus musculus Source: EMAP eMouse Atlas Project. http://www.emouseatlas.org. Stage G

48. House mouse (mammal) Mus musculus Source: EMAP eMouse Atlas Project. http://www.emouseatlas.org. Stage H

49. House mouse (mammal) Mus musculus Source: EMAP eMouse Atlas Project. http://www.emouseatlas.org. Stage I

50. House mouse (mammal) Mus musculus Source: EMAP eMouse Atlas Project. http://www.emouseatlas.org. Stage J

51. Pond slider (reptile—turtle) Trachemys scripta Source: Greenbaum, E. 2002. A standardized series of embryonic stages for the emydid turtle Trachemys scripta. Canadian Journal of Zoology 80: 1350–1370. Stage A

52. Pond slider (reptile—turtle) Trachemys scripta Source: Greenbaum, E. 2002. A standardized series of embryonic stages for the emydid turtle Trachemys scripta. Canadian Journal of Zoology 80: 1350–1370. Stage B

53. Pond slider (reptile—turtle) Trachemys scripta Source: Greenbaum, E. 2002. A standardized series of embryonic stages for the emydid turtle Trachemys scripta. Canadian Journal of Zoology 80: 1350–1370. Stage C

54. Pond slider (reptile—turtle) Trachemys scripta Source: Greenbaum, E. 2002. A standardized series of embryonic stages for the emydid turtle Trachemys scripta. Canadian Journal of Zoology 80: 1350–1370. Stage D

55. Pond slider (reptile—turtle) Trachemys scripta Source: Greenbaum, E. 2002. A standardized series of embryonic stages for the emydid turtle Trachemys scripta. Canadian Journal of Zoology 80: 1350–1370. Stage E

56. Pond slider (reptile—turtle) Trachemys scripta Source: Greenbaum, E. 2002. A standardized series of embryonic stages for the emydid turtle Trachemys scripta. Canadian Journal of Zoology 80: 1350–1370. Stage F

57. Pond slider (reptile—turtle) Trachemys scripta Source: Greenbaum, E. 2002. A standardized series of embryonic stages for the emydid turtle Trachemys scripta. Canadian Journal of Zoology 80: 1350–1370. Stage G

58. Pond slider (reptile—turtle) Trachemys scripta Source: Greenbaum, E. 2002. A standardized series of embryonic stages for the emydid turtle Trachemys scripta. Canadian Journal of Zoology 80: 1350–1370. Stage H

59. Pond slider (reptile—turtle) Trachemys scripta Source: Greenbaum, E. 2002. A standardized series of embryonic stages for the emydid turtle Trachemys scripta. Canadian Journal of Zoology 80: 1350–1370. Stage I

60. Pond slider (reptile—turtle) Trachemys scripta Source: Greenbaum, E. 2002. A standardized series of embryonic stages for the emydid turtle Trachemys scripta. Canadian Journal of Zoology 80: 1350–1370. Stage J

61. Zebrafish (fish) Danio rerio Source: Kimmel, C., W. Ballard, S. Kimmel, B. Ullmann, and T. Schilling. 1995. Stages of embryonic development of the zebrafish. Developmental Dynamics 203: 253–310. Stage A

62. Zebrafish (fish) Danio rerio Source: Kimmel, C., W. Ballard, S. Kimmel, B. Ullmann, and T. Schilling. 1995. Stages of embryonic development of the zebrafish. Developmental Dynamics 203: 253–310. Stage B

63. Zebrafish (fish) Danio rerio Source: Kimmel, C., W. Ballard, S. Kimmel, B. Ullmann, and T. Schilling. 1995. Stages of embryonic development of the zebrafish. Developmental Dynamics 203: 253–310. Stage C

64. Zebrafish (fish) Danio rerio Source: Kimmel, C., W. Ballard, S. Kimmel, B. Ullmann, and T. Schilling. 1995. Stages of embryonic development of the zebrafish. Developmental Dynamics 203: 253–310. Stage D

65. Zebrafish (fish) Danio rerio Source: Kimmel, C., W. Ballard, S. Kimmel, B. Ullmann, and T. Schilling. 1995. Stages of embryonic development of the zebrafish. Developmental Dynamics 203: 253–310. Stage E

66. Zebrafish (fish) Danio rerio Source: Kimmel, C., W. Ballard, S. Kimmel, B. Ullmann, and T. Schilling. 1995. Stages of embryonic development of the zebrafish. Developmental Dynamics 203: 253–310. Stage F

67. Zebrafish (fish) Danio rerio Source: Kimmel, C., W. Ballard, S. Kimmel, B. Ullmann, and T. Schilling. 1995. Stages of embryonic development of the zebrafish. Developmental Dynamics 203: 253–310. Stage G 1 mm

68. Zebrafish (fish) Danio rerio Source: Kimmel, C., W. Ballard, S. Kimmel, B. Ullmann, and T. Schilling. 1995. Stages of embryonic development of the zebrafish. Developmental Dynamics 203: 253–310. Stage H 1 mm

69. Zebrafish (fish) Danio rerio Source: Kimmel, C., W. Ballard, S. Kimmel, B. Ullmann, and T. Schilling. 1995. Stages of embryonic development of the zebrafish. Developmental Dynamics 203: 253–310. Stage I 1 mm

70. Zebrafish (fish) Danio rerio Source: Kimmel, C., W. Ballard, S. Kimmel, B. Ullmann, and T. Schilling. 1995. Stages of embryonic development of the zebrafish. Developmental Dynamics 203: 253–310. Stage J 1 mm

71. African clawed frog (amphibian—frog) Xenopus laevis Source: Xenbase. http://www.xenbase.org. Stage A

72. African clawed frog (amphibian—frog) Xenopus laevis Source: Xenbase. http://www.xenbase.org. Stage B

73. African clawed frog (amphibian—frog) Xenopus laevis Source: Xenbase. http://www.xenbase.org. Stage C

74. African clawed frog (amphibian—frog) Xenopus laevis Source: Xenbase. http://www.xenbase.org. Stage D

75. African clawed frog (amphibian—frog) Xenopus laevis Source: Xenbase. http://www.xenbase.org. Stage E

76. African clawed frog (amphibian—frog) Xenopus laevis Source: Xenbase. http://www.xenbase.org. Stage F

77. African clawed frog (amphibian—frog) Xenopus laevis Source: Xenbase. http://www.xenbase.org. Stage G

78. African clawed frog (amphibian—frog) Xenopus laevis Source: Xenbase. http://www.xenbase.org. Stage H

79. African clawed frog (amphibian—frog) Xenopus laevis Source: Xenbase. http://www.xenbase.org. Stage I

80. African clawed frog (amphibian—frog) Xenopus laevis Source: Xenbase. http://www.xenbase.org. Stage J