Activity

Argentine Fossils Reveal The First Giant Dinosaurs, Lessemsaurids (Like Ingentia Prima, The “First Giant Dinosaur,” And Its Close Relative Lessemsaurus Sauropoides). These ~10-Ton Herbivores From The Late Triassic (~210–215 Myrs Ago) Represent An Early Surge In Size Among Sauropodomorphs, Precursors To The Largest Dinosaurs That Ever Lived.

https://www.bbc.com/news/science-environment-44744153

Discovery of “first giant” shows how and when dinosaurs grew to such massive proportions.