ampibians
They theorize that during this period the first of three gill arches on a jawless fish evolved into the first jaws.
90% of modern birds
yes
Scientists think that penguins evolved from flying birds, similar to petrels and albatrosses, around 60 million years ago. Over time, they adapted to a more aquatic lifestyle, leading to their distinctive form and characteristics we see today.
because RNA depend to DNA.
Most evolutionary scientists today do not think that amphibians evolved from the lungfish. They do share some characteristics, but the lungfish has no hint of legs.
The Osteichthyes is evolved from lungs of early bony fish. The fish have many types of evolved.
We do no know exactly what kind of lizard snakes evolved from, but scientists think it was related to monitor lizards.
Scientists think that all life evolved from the ocean, because that's where all life started. Animals come out of the ocean and through many generations, they get characteristics that help them survive.
i think sea iguanas
Currently, there are about 23,000 fish species, but scientists think there may be nearly double that amount that have not been discovered, yet.
Fish, reptiles, and amphibians, originated in that order during the Paleozoic era.