The Paleozoic Era, which lasted from about 542 million years ago to 251 million years ago, was a time when different changes existed on Earth. The era began with the breakup of one supercontinent (Pangea) ,and the formation of another. In addition, plants became common, and the first vertebrate animals populated land. The Paleozoic began with the Cambrian Period about 53 million years best known for leading in an explosion of life on Earth. This Cambrian explosion encompassed the evolution of arthropods which are ancestors of today's insects and crustaceans, as well as chordates which are animals with rudimentary spinal cords.
Vertebrates are a well-known group of animals that includes birds, amphibians mammals, fish, and reptiles. The vertebrates can be well described by their backbone, an anatomical feature that first occurred in the fossil record about 500 million years ago. When scientists describe vertebrate evolution, they most often originate it as a change from water to …show more content…
Other pieces of the animals body are normally reprocessed by decomposers and can not be considered to make it to the fossil stage. Only about one tenth of the species living today are build up of tissues and live in habitats that make it easy for fossilization to appear. Animal fossils are only established in areas with unusually good surroundings for preservation that permits the more biodegradable pieces to be preserved and represent a precise depiction of the diversity of species alive during that time. Most of the fossils found in Texas are sea creatures since most of the area of Texas property was largerly underwater. Few are vertibrae, which means having a vertibral or spinal column. Some turtles, fish and other animals are discovered. And within seven miles of Texas property, is the Dinosaur State Park located in Glen Rose, TX where tracks in the Paluxy River are very
Vertebrates are a well-known group of animals that includes birds, amphibians mammals, fish, and reptiles. The vertebrates can be well described by their backbone, an anatomical feature that first occurred in the fossil record about 500 million years ago. When scientists describe vertebrate evolution, they most often originate it as a change from water to …show more content…
Other pieces of the animals body are normally reprocessed by decomposers and can not be considered to make it to the fossil stage. Only about one tenth of the species living today are build up of tissues and live in habitats that make it easy for fossilization to appear. Animal fossils are only established in areas with unusually good surroundings for preservation that permits the more biodegradable pieces to be preserved and represent a precise depiction of the diversity of species alive during that time. Most of the fossils found in Texas are sea creatures since most of the area of Texas property was largerly underwater. Few are vertibrae, which means having a vertibral or spinal column. Some turtles, fish and other animals are discovered. And within seven miles of Texas property, is the Dinosaur State Park located in Glen Rose, TX where tracks in the Paluxy River are very