BIO211H5 Lecture Notes - Morganucodon, Nasal Concha, Vertebral Column
Document Summary
Today, we"re going to do something different than we"ve done for every other lecture. The remainder of this class is going to be divided between looking at the mesozoic and the. It is broken down into three time periods: the triassic (248-206), the jurassic (206-144), the cretaceous (144-65). It is an interval of pronounced climate changes, and it is the interval of the most dynamic plate tectonic activity in the phanerozoic. It is also the interval where we see the origins of the most of the modern groups of animals wtaht we would recognize today. The triassic is characterized by a couple of things: the breakup of pangea becomes important. We have the first occurrence of animals like turtles, frogs, modern groups of fishes, and dinosaurs. We have hte beginning of whaat is called the mraine arms race. we have he origin of ammals. We have the radiation of initial modern plants.
