This second lesson in a course on dinosaurs is devoted to extinction. There are group activities, discussion of the idea, and a way to assess what the students have learned.

[Free Registration/Login may be required to access all resource tools.] Covers the Mesozoic Era, the age of dinosaurs.

"The survivals and extinctions at the close of the Cretaceous are such as might be expected to result from intensely hot winds such as would be generated by extra large meteoritic impacts." This article suggests that this theory should...