What is true of the fossil record of mammalian origins?

Question

Quizplus · Accepted Answer

The fossil record of mammalian origins does include transitional forms with progressively specialised teeth, indicating the evolution of mammals from earlier reptiles.

Answer: C
 The fossil record of mammalian origins shows that mammals evolved after the extinction of dinosaurs, indicating that they did not overlap in geologic time.

Answer: D
 The fossil record does not show a gradual change of scales into fur, but rather a clear distinction between reptilian scales and mammalian hair. Therefore, choice D is incorrect.

Answer: A
 While some scientists believe that birds evolved from a particular group of dinosaurs (theropods), there is no evidence that mammals and birds evolved from the same kind of dinosaur. Therefore, choice A is incorrect.

What Is True of the Fossil Record of Mammalian Origins