| 41. | The species sometimes has almost an entire dorsal surface of carapace yellow with submarginal brown.
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| 42. | The dorsal surfaces are glabrous, matte or shiny black.
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| 43. | This border separates the medial from the dorsal surface.
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| 44. | Modified denticles cover the dorsal surface of the head and upper edge of dorsal fin.
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| 45. | The embryo is covered on the dorsal surface by a layer of cells called ectoderm.
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| 46. | Juveniles are bluish in color on the dorsal surface and silvery on the ventral surface.
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| 47. | On the dorsal surface of the head are dark symmetrical markings which may form an arrowhead.
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| 48. | The dorsal surface can be bumpy or smooth.
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| 49. | The cisterna magna is located between the cerebellum and the dorsal surface of the medulla oblongata.
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| 50. | The dorsal surface is mottled with puck brown.
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