Defining the Group Dinosauria

Explore the classification and unique features of dinosaurs in this 41-minute lecture. Learn about the challenges of breathing and chewing, the definition of Reptilia, and how mammals also lay eggs. Discover the use of cladograms, examine early amniotes like Hylonomus, and understand key distinctions in animal classification. Investigate Archosauromorpha, Archosauriformes, and Archosauria, including primitive pterosaurs. Delve into the evolutionary reasons behind dinosaur characteristics and preview upcoming lectures on their differences.

Intro
Classification of Dinosauria
Breathing and Chewing is Hard to do
Instead what is Reptilia?
Mammals also lay eggs
Humans use a modified amniotic egg
Cladograms
Hylonomus (an amniote)
A real distinction
Turtles
Another example
Archosauromorpha
Archosauriformes
Euparkeria capensis
Archosauria
Most primitive Pterosaur to date
The next question is why?
Family Tree
In 3 Lectures we discuss the differences