some basic factors makes dinosaurs what they are.
- Dinosaurs have extra holes in their skulls
- Lived in the Mesozoic Era
- Has legs directly under it's body
- Has a Hinged Ankle
- Is an Archosaur
One way to demonstrate how dinosaurs evolved over time can
be shown with the use of a cladogram. Most cladograms are
extreme complicated that show every dinosaur species. Here
is simpler one.
a geological time scale can help.
during the Paleozoic,
Mesozoic and
Cenozoic eras.