Give an example of how mammals were able to differentiate in the Cenozoic Era.
Mammals differentiated into many forms, such as whales, bats, primates, and hoofed mammals, each adapted to different environments.
Other than dinosaurs, what life forms existed during the Mesozoic Era?
Early mammals, birds, crocodiles, turtles, lizards, insects, and plants such as conifers and cycads existed during the Mesozoic Era.
What were the first mammals like?
The first mammals were small, shrew-like, hairy, warm-blooded animals, many of which were nocturnal insect eaters.
What event marked the end of the Mesozoic Era?
A mass extinction, likely caused by a large asteroid impact, marked the end of the Mesozoic Era.
Explain what is meant by the term “good mother dinosaurs.”
“Good mother dinosaurs” were dinosaurs that cared for their offspring by guarding nests and protecting or feeding their young.
How long ago did Homo sapiens first appeared in the fossil record? Identify the era in which this occurred.
Homo sapiens first appeared in the fossil record about 200,000 years ago, during the Cenozoic Era.
Why do some scientists believe that dinosaurs were warm blooded?
Some scientists think dinosaurs were warm-blooded because fossils occur in polar regions and their upright bodies, rapid growth, active behavior, and insulating feathers suggest they could generate and maintain body heat.
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