| 21. | Their scales, called dermal denticles, and teeth are homologous organs.
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| 22. | It is brownish above and white below, and lacks dermal denticles.
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| 23. | The dermal denticles are not tightly packed and overlap each other minimally.
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| 24. | The dermal denticles are large and rough, especially on the flanks.
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| 25. | The dermal denticles are large, giving the skin a rough texture.
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| 26. | The dermal denticles are tiny, smooth, and non-overlapping.
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| 27. | The skin is thick and covered by well-calcified dermal denticles.
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| 28. | The dark skin lesions often show a palpable loss of dermal substance.
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| 29. | The dermal denticles have rounded bases and three horizontal ridges.
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| 30. | The skin is soft and entirely devoid of dermal denticles.
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