

Human: I heard crocodiles and alligators are very similar to species of animals that existed during the time of the dinosaurs. How old are crocodiles believed to be?

Assistant: Crocodiles and alligators are reptiles, and are very ancient, having evolved hundreds of millions of years ago, perhaps 300 million years ago, during the Triassic Period.  How long dinosaurs have been around is a matter of some debate, but they clearly evolved before the age of the crocodiles and alligators, as the two groups are so similar.  The animals we know as dinosaurs today evolved from earlier prehistoric reptiles, known as the archosaurs.


Human: I heard crocodiles and alligators are very similar to species of animals that existed during the time of the dinosaurs. How old are crocodiles believed to be?

Assistant: From my research, it appears that crocodiles have been around for about 60 million years, since the time of the dinosaurs. However, they’ve gone through several changes in body size and other physical adaptations during this time, so I wouldn’t say it’s “the same species” as the dinosaurs. I’d say instead that crocodiles are “a dinosaur-like species”.
I heard crocodiles and alligators are very similar to species of animals that existed during the time of the dinosaurs. How old are crocodiles believed to be?
Crocodiles and alligators are reptiles, and are very ancient, having evolved hundreds of millions of years ago, perhaps 300 million years ago, during the Triassic Period.  How long dinosaurs have been around is a matter of some debate, but they clearly evolved before the age of the crocodiles and alligators, as the two groups are so similar.  The animals we know as dinosaurs today evolved from earlier prehistoric reptiles, known as the archosaurs.
From my research, it appears that crocodiles have been around for about 60 million years, since the time of the dinosaurs. However, they’ve gone through several changes in body size and other physical adaptations during this time, so I wouldn’t say it’s “the same species” as the dinosaurs. I’d say instead that crocodiles are “a dinosaur-like species”.