how the prehistoric creatures came to life part one

The first ever life was cells called Archaea which can form into sponge which when you cut half of it then squeeze in water then wait a couple of days it with come back new and fresh. Then it evolved into a ten inch feather looking thing that I forgot, stuck to the ground feeding on the suns rays. Which got fossilised by a super volcano’s ashes that covered them heavily in Canada but in the other parts of the world they survived. After evolving into some thing that moved the same speed as the star fish we know from today. they could’t eat yet because they haven’t evolved mouths and some living seaweed learnt how to interact sexually to each other to make more of the population grow. Then it has come the predator and prey mouths have evolved like the sea scorpion which was a very exiting thing for scientists or archaeologist.After the that it was the Devonian era which means that Dunkleosteus so let me tell about him. Dunkleosteus is an extinct genus of arthrodire placoderm fish that existed during the Late Devonian period, about 380–360 million years ago. Some of the species, such as D. terrelli, D. marsaisi, and D. magnificus, are among the largest arthrodire placoderms ever to have lived.
The largest species, D. terrelli, measuring up to 10 m (33 ft)and weighing 3.6 t (4.0 short tons), was a hypercarnivorous apex predator. Few other placoderms, save, perhaps, its contemporary Titanichthys, rivaled Dunkleosteus in size.
Dunkleosteus is a pachyosteomorph arthrodire originally placed in the family Dinichthyidae, a family composed mostly of large, carnivorous arthrodires like Gorgonichthys. Anderson (2009) suggests, because of its primitive jaw structure, Dunkleosteus should be placed outside the family Dinichthyidae, perhaps close to the base of the clade Pachyosteomorpha, near Eastmanosteus. Carr and Hlavin (2010) resurrect Dunkleosteidae and place Dunkleosteus, Eastmanosteus, and a few other genera from Dinichthyidae within it. (Dinichthyidae, in turn, is made into a monospecific family).
New studies have revealed several features in both its food and biomechanics, as well as its ecology and physiology. Placodermi first appeared in the Silurian, and the group became extinct during the transition from the Devonian to the Carboniferous, leaving no descendants. The class persisted in the fossil record for at least 70 million years, in comparison to the 400-million-year-long history of sharks and now lets move on. The Paleozoic Era, which ran from about 542 million years ago to 251 million years ago, was a time of great change on Earth. The era began with the breakup of one supercontinent and the formation of another. Plants became widespread. And the first vertebrate animals colonized land.The Paleozoic began with the Cambrian Period, 53 million years best known for ushering in an explosion of life on Earth. This “Cambrian explosion” included the evolution of arthropods (ancestors of today’s insects and crustaceans) and chordates (animals with rudimentary spinal cords). After the Paleozoic era is the Triassic which is where the dinosaurs kick and the the very first dinosaur was Plateosaurus(a plant eater) which was the cousin of the sauropods like argentinosaurs(the largest dinosaur in the world).