WebbThe Paleozoic era was dominated by marine organisms, but by the middle of the era, plants and animals had evolved to live and reproduce on land, including amphibians and reptiles. Fish evolved jaws and fins evolved into limbs. Lungs evolved and life emerged from the sea onto land to become the first four-legged tetrapods, amphibians. WebbSection 3: The Paleozoic Era. • First four-legged animals developed began. The Paleozoic Era lasted from about 540 million years ago to about 248 million years ago. During this time period of about 292 million years, shallow seas came inland several times. Sharks and other fish, along with many other kinds of animals, lived in the water.

Evolution: Change: Deep Time - PBS

http://oceansofkansas.com/Paleozoic.html WebbThis period saw the mass evolution of fish, as jawless fish became more numerous, jawed fish evolved, and the first freshwater fish evolved, though arthropods, such as sea … slow down audio in premiere pro

In What Era Can The Oldest Fossils Be Found - QnA

WebbThe earliest shark-like teeth we have come from an Early Devonian (410-million-year-old) fossil belonging to an ancient fish called Doliodus problematicus. Described as the 'least … WebbCarboniferous Sharks. The first creatures with backbones emerged during the Paleozoic Era. Here, the shark ( Edestus heinrichi) pursues its prey ( Iniopera richardsoni ). … Webb7 mars 2024 · Relatively small sharks--such as the bizarrely ornamented Stethacanthus and the weirdly scaleless Cladoselache--were an increasingly common sight in the Devonian seas. slow down audio in audacity