Which two groups of organisms were commonly found during the jurassic period?

The answer is the Dinosaurs and the Pterosaurs.

The Jurassic Period follows Triassic Period. It is known as the Age of Reptiles. the land was dominated by the dinosaurs and the flying pterosaurs. Both groups are reptiles. Other animals and plants during this period have just recovered from the largest mass extinctions on Earth.

Answer dot(3) is most used;