Scales
No, Sturgeons are fish. Dinosaurs are reptiles.
Fish, reptiles, and amphibians, originated in that order during the Paleozoic era.
No. While reptiles have some DNA in common with dinosaurs, they are not descended from dinosaurs.
Fish, then amphibians then to reptiles then so on...
Sharks existed at the same time dinosaurs did. Sharks pre-date the dinosaurs by quite a bit. To get from sharks to dinosaurs: sharks - bony fish - lobe finned fish - lung fish - amphibians - reptiles - dinosaurs.
Piranhas are not reptiles. They are omnivorous fresh water fish.
No. Dinosaurs evolved from reptiles. Birds evolved from dinosaurs.
Both snakes and dinosaurs are diapsid reptiles. Dinosaurs, however, are archosaurs. Snakes are squamates.
All dinosaurs were terrestrial. Therefor, there are no finned dinosaurs. However, there were finned reptiles that looked a lot like fish or dolphins, and they were called icthyosaurs.
Dinosaurs are more closely related to reptiles than to amphibians. In fact, dinosaurs are classified as reptiles. Amphibians are lower on the evolutionary tree than reptiles. Reptiles developed from amphibians. Amphibians developed from fish.
reptiles and amphibians have the most in common
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.