Evolution Paper Topic on Monotremes

Evolution Paper Topic on MonotremesAn Evolution Paper Topic on Monotremes can be quite interesting for those who are studying the origins of land mammals. Although there is much to learn about these animal ancestors, it is possible to learn about them in a new way by examining their evolution through time.For instance, the lineage of allosaurus from the super herbivores that lived at the end of the Cretaceous period, is a favorite topic among paleontologists. As they are interested in fossils of these animals, it is likely that allosaurus was the first group of carnivorous dinosaurs. It has been discovered that it probably reached sizes of two tons or more, and possibly three or four tons. This giant herbivore may have fed on a diet similar to that of the alligator, except that it probably was not capable of swimming. If that is the case, it would be reasonable to suggest that allosaurus grazed the open waters during its daily life.Allosaurus evolved into theropods. Allosauria are th ree taxa of the same animal family and include species of allosaurus, T. rex, and mastodon. These huge marine predators, in fact, are members of the mosasaurs class. The more familiar name 'mastodon' is given to a more primitive type of mosasaur, which lived alongside the allosaurus, not as a direct ancestor. The last member of the mosasaurs was Stegosaurus, a member of the sauropods class.Theropods evolved into birds. Fossils of early birds have been found with feathers, which were present in the same location where they would have been if they had evolved from dinosaurs. Moreover, the dinosaur remains found in areas of the world where dinosaurs roamed included the bones of Archaeopteryx, a feathered bird that lived during the middle of the Cretaceous period. Theropods became birds only after eventually losing their dinosaur teeth and becoming adapted to the food provided by different forms of plants.Crocodilians evolved into turtles. Some turtles are amphibious, while others remai n close to the land. In fact, the earliest known fossil turtles are of four-legged turtles. These animals became reptiles, a broad term for animals that lack the organs needed to breathe air and to walk on land. The turtle is the closest animal to the traditional form of the reptile, however, because both have a backbone.Leptocleidids evolved into plesiosaurs. Pliosaurs, with their shells, are the ancestors of the whale and the dolphin. Leptocleidids are a group of dinosaurs, consisting of sauropods, troodontids, ichthyosaurs, therapsids, and allosaurs. Like most dinosaur groups, these animals gained armor plates and tails during their evolution. They also become terrestrial, as they walked on the surface of the ground.Cynodonts evolved into crocodiles. These aquatic animals descended from placoderm, an early form of marine mammal. Only plesiosaurs and whales belong to this group. The relationship between plesiosaurs and leptocleidids is unknown, although many scientists believe it probably was so. These animals may have first been part of the carnivorous dinosaur clade, or they may have simply been grazers.One Evolution Paper Topic on Monotremes will reveal how little is really known about the history of these animals. As they once dominated the Earth's ecosystems, understanding their evolution may give insight into future predictions about the ways in which other forms of life and dinosaurs evolve.