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The evolution of which of the following features of mammals is hardest to trace through the fossil record?a. Jaw structureb. Mammary glandsc. Middle ear structured. Development of hair
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This is because these structures are durable and can withstand the processes that lead to fossilization. Show more…
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The evolution of which of the following features of mammals is hardest to trace through the fossil record? a. Jaw structure b. Mammary glands c. Middle ear structure d. Development of hair
Which of the following features was NOT present in the last common ancestor of all mammals? Giving birth to live young. Three bones present in the middle ear. Nursing young with milk from mammary glands. Hair. Single bone in the lower jaw.
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