Educator Guide: Here Come the (Bigger) Mammals

Scientists found 40 mammal skulls (some shown) at a fossil site in Colorado. The fossils show how mammals thrived after an asteroid strike 66 million years ago.
HHMI Tangled Bank Studios
About this guide
This guide, based on the Science News article “Here come the (bigger) mammals,” asks students to analyze a graph about a recent fossil find, discuss how organisms evolve as ecosystems change and research important fossil sites across the world.
This Guide Includes:
Do not disturb
Stories in rock
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