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Fossils, embryos and other clues provide evidence that fish evolved before birds. The evolutionary record indicates that limbs and wings developed over millions of years after fish evolved. Approximately 400 million years ago, evidence indicates that lobe fish first came in to existence.Did humans evolve from fish?
The coelacanth is a lobe-finned fish and it evolved from the armoured fish (BBC, 1998). Fish are chordates like humans, meaning they have a notochord, or spine (Parrish, 1998). The first fish to evolve were the Agnathans, which were armoured, jawless fish the lived in the Devonian and Silurian periods (Parrish, 1998).Which evolved first jawless fish or jawed fish?
The first fish lineages belong to the Agnatha , or jawless fish. Early examples include Haikouichthys. During the late Cambrian, eel-like jawless fish called the conodonts, and small mostly armoured fish known as ostracoderms, first appeared. Most jawless fish are now extinct; but the extant lampreys may approximate ancient pre-jawed fish.