2007-07-24 14:54:03 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Zoology
She's right. Crocodilians were larger but the basic form and shape has not changed very much over the past 65 million years unlike many, many other species which are unrecognizable when compared to their suggested ancestors of 65 million years ago.
Edit: This one here even has a picture. Its arms and legs were longer! You'll notice it says there modern crocodilians emerged in the Late Cretaceous. The Late Cretaceous was a period from about 100 million years ago to 65 million years ago.
2007-07-24 15:48:17 · answer #1 · answered by Professor Armitage 7 · 1⤊ 0⤋
Yes. The ancestors of todays crocodilians were present about 250 million years ago.
"Crocodilians, along with birds, are the only survivors of the once-prevalent Archosauria. During the Mesozoic (245-65 million years ago) this group, including dinosaurs and other reptiles, dominated life on all continents and in the oceans. Most or all of crocodilians' adaptations had already evolved by the late Triassic (about 200 million years ago). Crocodilians are the most advanced surviving reptiles; many of their features are more similar to mammals or birds than to other reptiles."
http://animaldiversity.ummz.umich.edu/site/accounts/information/Crocodilia.html
2007-07-24 22:48:09 · answer #2 · answered by Anonymous · 3⤊ 0⤋
No living being on Earth is that old, I think crocodiles and aligators live less than 80 years.
2007-07-27 16:30:55 · answer #3 · answered by Darth Eugene Vader 7 · 0⤊ 0⤋
I believe the answer is yes this what I always heard in school science classes.
2007-07-24 22:00:15 · answer #4 · answered by Aimee 4 · 2⤊ 1⤋