Question

the species of dinosaurs which were enormous in size became extinct​

Answer 1

Answer:

Argentinosaurus

Answer 2

Answer:

Geological evidence indicates that dinosaurs became extinct at the boundary between the Cretaceous and Paleogene eras, about 66 million years ago, at a time when there was worldwide environmental change resulting from the impact of a large celestial object with the Earth and/or from vast volcanic eruptions.