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Reptile Evolution

Amniotic reptiles evolved from reptiles that moved onto land and developed amniotic eggs.

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No Time For The Summertime Blues
Teacher Contributed


Northernmost Reptile

Why It Matters

Living For The Summer

Many students live for the summer, no school, warm weather and big fun. But other organisms look forward to the summer for slightly different reasons. For "cold-blooded" organisms, the summer warmth means more than fun, it means life. The warmth may not mean as much to "cold-blooded" animals in the tropics, but as you move away from the tropics into higher latitudes that warmth becomes vital and the "cold-blooded" animals fewer. Go here to watch a far north "cold-blooded" animal.

Go here to see some hibernating lizards

Go here to find out about Zootoca vivipara's habits in France.

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use the resources below to answer the following questions

  1. How can you tell a male Zootaca vivipara from a female?
  2. What does oviparous mean?
  3. What is the geographical range of Zootaca vivipara?
  4. Why do you think they occur at higher altitudes at the southern end of their geographical range?
  5. How do you think the number of days a year they are active varies throughout their geographical range?

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