Yes, sharks existed on Earth before the dinosaurs.
Yes, there were! In fact, sharks were around even beforethe dinosaurs!
they have been around since the dinosaurs.
Shark
Megalodon Shark is an ancient shark that lived back around the time of the dinosaurs. It was much bigger than any shark we see nowadays.
dinousaurs then they were extinkt and crocodiles came along.
yes. some squids were even around before the dinosaurs ruled
Shark
Yes. Most scientist's actually believe that the tortoises were around before the dinosaurs.
Yes.
Probably not...
No. First of all, there are no "sea dinosaurs." During the time of the dinosaurs there were marine reptiles such as plesiosaurs and icthyosaurs, but they were not closely related to dinosaurs. Sharks are cartilaginous fish. Reptiles are ultimately descended from bony fish, which split off from cartilaginous fish more than 100 million years before the first reptiles appeared.
Yes. Mosses were around long before the dinosaurs were.