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Which Animals are among the Largest that have ever Lived?

which_animals_are_among_the_largest_that_have_ever_lived

Which Animals are among the Largest that have ever Lived?

Just a few of the primitive fishes that were living during Devonian times.

The very early stages in the lives of very different animals are quite similar. it is thought that this is because the animals had a common ancestor.

Water fleas are about 1/10 of an inch long and seem to spend their lives trying to stay in one position in the water.

Radiolarians like the ones shown here are planktonic marine animals whicj may feed on tiny plants.

Which were the First Animals with Warm Blood?

Which were the First Animals with Warm Blood?