How was the Cretaceous period different from the Jurassic Period?
a.
The Jurassic period had angiosperms, while the Cretaceous did not.
b.
Pangaea split during the Jurassic period.
c.
There were dinosaurs in the Jurassic period, which went extinct in the Cretaceous period.
d.
Conifers and ferns were present in the Jurassic period, but not in the Cretaceous period.