Which are warm-blooded, have hair, and have young that are nourished with milk from their mother’s mammary glands?

Baleen, an animal structure used to sift plankton from the oceans, evolved in which group?

The mature red blood cells in which group have a nucleus?

The smallest living members of which group weigh under 1 gram (0.04 ounce) whereas the largest can weigh about 180 metric tons (about 200 short tons)?

In which group does the quadrate bone separate the lower jaw from the skull?

Which group is made up of chondrichthians, agnathans, and osteichthyians?

In geologic time, the Devonian Period is also known as the age of which group?”

Which group includes the proboscideans, metatherians, chiropterans, and cetaceans?