The Age of Mammals: From Extinction to Evolution

What event 66 million years ago led to the mass extinction of dinosaurs?

• A global ice age

• An asteroid impact

• A massive volcanic eruption

• A supernova explosion

What was one of the immediate effects of the asteroid impact on Earth's climate?

• A rise in global temperatures

• A prolonged global winter

• Increased volcanic activity

• A decrease in sea levels

What is the significance of the thin clay line found around the world?

• It shows the first evidence of human life

• It contains the fallout from the asteroid impact

• It indicates the first appearance of mammals

• It marks the beginning of the Ice Age

What was the primary focus of the research at Corral Bluffs?

• Studying the extinction of marine life

• Reconstructing the ecosystem after the dinosaur extinction

• Finding evidence of early human settlements

• Analyzing volcanic activity in the region

What discovery did Sharon Milito make at Corral Bluffs?

• A complete dinosaur skeleton

• A rare mammal jaw fossil

• A new species of turtle

• The oldest known bird fossil

What role did concretions play in the preservation of fossils?

• They were unrelated to fossil preservation

• They caused fossils to disintegrate

• They protected fossils from erosion

• They accelerated the decay of organic material

What dietary adaptation was observed in early mammals after the extinction event?

• They became strict carnivores

• They specialized in eating insects

• They were generalists, eating both plants and meat

• They only consumed aquatic plants

What significant plant discovery was made by a student at Corral Bluffs?

• The first evidence of ferns

• The oldest known legume fossil

• A new species of palm tree

• The first evidence of flowering plants

How did legumes contribute to the evolution of mammals?

• They provided a new source of protein

• They caused a decline in mammal populations

• They were toxic to early mammals

• They had no impact on mammal evolution

What does the recovery period after the extinction event signify?

• The extinction of all mammals

• The start of the modern world

• The beginning of the Ice Age

• The end of all plant life