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Survival of the Fittest?
In this lesson plan students will investigate the evidence from modern and prehistoric crocodilians like SuperCroc (Sarcosuchus imperator) to determine the causes of survival and mass extinction at the Cretaceous/Tertiary boundary about 65 million years ago. Students will research and take notes on questions about modern and prehistoric crocodilians, and write papers providing their opinions of why crocodilians have survived so long, including evidence from their research.
Intended for grade levels:
  • High (9-12)
Type of resource:
  • For the classroom:
    • Lesson plan
  • Geological Sciences:
    • Paleontology
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Copyright 2003 National Geographic Society. All rights reserved.
DLESE Catalog ID: DLESE-000-000-004-356
Educational standards:
  • National Geography Standards:
    • Physical systems:
      • The characteristics and spatial distribution of ecosystems on Earth's surface
Related resources:
This resource is part of 'National Geographic Xpeditions Atlas'
Resource contact / Creator / Publisher:
Publisher: National Geographic Society