Which era is often referred to as the "Jurassic Park" era?

The term "Jurassic Park" is commonly associated with the Mesozoic Era because this era is known for the prominence of dinosaurs, which are the main attraction in the fictional world of "Jurassic Park." The Mesozoic Era is characterized by three significant periods: the Triassic, Jurassic, and Cretaceous, during which dinosaurs evolved, thrived, and diversified. The Jurassic Period, in particular, is often highlighted for its rich fossil record of dinosaurs and is frequently depicted in popular culture, hence the connection to the term "Jurassic Park."

In contrast, the other geological eras do not share this association. The Paleozoic Era, preceding the Mesozoic, is known for the emergence of early life forms, including fish, amphibians, and reptiles, but not specifically dinosaurs. The Cenozoic Era follows the Mesozoic and is often referred to as the Age of Mammals, marked by the dominance of mammals and birds after the extinction of the dinosaurs. Lastly, the Pre-Cambrian Era, which encompasses the time before the Paleozoic, saw the origin of simple life forms and lacks significant dinosaur fossils. Thus, the Mesozoic Era is the correct choice when identifying the