| 31. | If the common ancestor of amphibians and amniotes is included in Amphibia, it becomes a paraphyletic group.
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| 32. | The organ of Corti also has a more complex structure in mammals than it does in other amniotes.
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| 33. | Laurin ( 2001 ), as it would make them more closely related to amniotes than to lissamphibians.
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| 34. | This earliest amniote had five fingers with claws on each hand, and marks the earliest clawed foot.
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| 35. | The cleithrum disappeared early in the evolution of reptiles, and in amniotes is very small or absent.
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| 36. | Mammals are amniotes, and most are pouch where it latches on to a nipple and completes its development.
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| 37. | MLIP is found only in amniotes ( reptiles, birds and mammals ), where it is highly conserved.
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| 38. | Hence, amniotes can lay eggs on dry land, while amphibians generally need to lay their eggs in water.
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| 39. | Amniotes, who could better cope with these drier conditions, rose to dominance in place of their amphibian ancestors.
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| 40. | While there are irregular cartilagenous nodules on the amphibian trachea, these do not form the rings found in amniotes.
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