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Scientists know that fish existed before amphibians because fish were found in a lower layer of rock.

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16y ago

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Why do scientists classify fish amphibians reptilesbirdsand mammals together in one group?

Fish, reptiles, amphibians, birds, and mammals are all vertebrates. They all have a backbone and internal bones.


What came before the fish amphibians reptiles and dinosaurs?

Fish, reptiles, and amphibians, originated in that order during the Paleozoic era.


Which group of fish do scientists believe amphibians evolved from?

Lobe-finned fishes are though to have given rise to amphibians. This is due to the body plan and body symmetry of the fish, which is very similar to that of an amphibian.


What came before the dinosaurs?

Fish, then amphibians then to reptiles then so on...


Why do scientists classify fish amphibians birds and mammals all in the same group?

All are vertebrates - all have a spinal column.


What characteristics do scientists used to classify vertebrates into smaller groups?

The five groups are Fish, Amphibians, Reptiles, Birds, Mammals


Are fish and frogs amphibians?

Fish are fish, their own group. Frogs are amphibians though.


Which came first fish or amphibians or reptiles?

Fish, and then amphibians, and then reptiles, and then mammals


Are clown fish amphibians?

No. Clownfish are fish. Amphibians include frogs, salamanders and caecilians.


Which shows the order in which vertebrates evolved amphibians fish birds reptiles mammals fish reptiles amphibians birds mammals amphibians fish reptiles birds mammals fish amphibians reptiles birds m?

The correct order in which vertebrates evolved is fish, amphibians, reptiles, birds, and then mammals. Fish were the first vertebrates to appear, followed by amphibians that adapted to life on land. Reptiles evolved next, leading to the development of birds and eventually mammals. Thus, the correct sequence is fish, amphibians, reptiles, birds, and mammals.


What are Fish that arnt fish?

axotles = amphibians


Are moray eels amphibians or fish?

Fish