Free Cretaceous Essays and Papers

Sort By:
Satisfactory Essays
Good Essays
Better Essays
Powerful Essays
Best Essays

Free Cretaceous Essays and Papers

Page 1 of 22 - About 214 essays
  • Better Essays

    The Cretaceous Extinction Event

    • 1325 Words
    • 6 Pages
    • 1 Works Cited

    Cretaceous Extinction Event Causes, Evidence, and Effects on Biodiversity The most significant event of the Cretaceous era came at its end. Nearly 65 million years ago, the second most severe mass extinction in earth’s history occurred. This resulted in the loss of around 80% of species living at the time. Though nowhere near as severe as the end-Permian mass extinction, the end-Cretaceous extinction is the most well known mass extinction event. This is due to the violent event that caused

    • 1325 Words
    • 6 Pages
    • 1 Works Cited
    Better Essays
  • Good Essays

    Examining the Cretaceous–Paleogene extinction event Over 98% of all organisms that have lived on Earth are now extinct. A mass extinction event occurs when a large number of species die out within a small time frame (relative to the age of Earth). Mass extinctions are intensively studied for both cause and effect, as there is usually room for debate regarding catalysts that precede the extinction and the massive influx of new biological species that follows. There have been five major mass extinctions

    • 547 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Feathered Dinos?

    • 671 Words
    • 3 Pages
    • 1 Works Cited

    Age of the Large Dinosaurs, looked as unfamiliar as Archaeopteryx, Confuciusornis, and Hesperornis. The early representatives of today's birds can also be found in this remote era of our past. In several continents, rocks originating from the late Cretaceous period have started providing the remains of early shore-birds, ducks, and other birds. They were the ancestors of the true heirs of the magnificent dinosaurs that traveled the Earth so long ago, millions of years, in fact. It is for certain, if

    • 671 Words
    • 3 Pages
    • 1 Works Cited
    Satisfactory Essays
  • Good Essays

    "The Cretaceous Period was the last and longest segment of the Mesozoic Era. It lasted approximately 79 million years, from the minor extinction event that closed the Jurassic Period about 145.5 million years ago to the Cretaceous-Paleogene extinction event dated at 65.5 million years ago"(Mary Bagley, LS). In the cretaceous period, the continent of Pangea was still breaking away from itself, forming what we now know as the seven world continents. In the many eras of dinosaurs, the cretaceous era

    • 730 Words
    • 3 Pages
    Good Essays
  • Better Essays

    Upper Cretaceous Seas Cretaceous Rock Formations of The Big Bend Area TRANSGRESSION/REGRESSION The cycles of the ocean waters rising (transgressing) and receding (regressing) are known as transgressive-regressive cycles. The mid- to Upper Cretaceous rocks in the Big Bend area of southwest Texas encompasses rock ages from approximately 70 to 100 million years ago (mya). During this time the sea transgressed and regressed a number of times. The final regression of the Cretaceous sea occurred

    • 1392 Words
    • 6 Pages
    Better Essays
  • Satisfactory Essays

    The Discovery of Dinosaur Fossils in Antarctica While working in Antarctica, two separate research teams with hundreds of miles between them each made astounding discoveries. They discovered dinosaur fossils. Antarctica has been home to many other dinosaur fossil finds but what was so special about these fossils is that they were from an unknown species of dinosaurs. Really what the discovery compliments is that the discovery of these fossils encourages the theory of plate tectonics and continental

    • 1128 Words
    • 5 Pages
    • 2 Works Cited
    Satisfactory Essays
  • Satisfactory Essays

    the man who wasnt

    • 718 Words
    • 3 Pages

    Chinese continental plates. The basin in which our Snark 3D dataset falls is the Northern Carnarvon Basin. This basin was developed during late Jurassic to early Cretaceous rifting. The base of the Cretaceous is easily distinguished in our dataset as the horizon separating the synrift Jurassic deposits from the post-rift Cretaceous. There are four main tectonic evolution phases seen in the area: 1) during the break up of Gondwana a series of intracratonic basins formed, 2) Early Jurassic extension

    • 718 Words
    • 3 Pages
    Satisfactory Essays
  • Satisfactory Essays

    First adapt radiation after Ordovician Period was the Silurian period, This happened about 443.7 - 416 years ago and after the first extinction. (N/A,N/A) This was the beginning of fresh water fish, plants and animals left the water to be on land. This began the terrestrial form of life with plant being assigned to the cooksonia genus and the vascular systems of complex plants. this period was subdivided into four epochs which had stages. (Fischer,Liu, Yip, and Yu, 1998) The next period was the

    • 720 Words
    • 3 Pages
    • 7 Works Cited
    Satisfactory Essays
  • Satisfactory Essays

    Extinction On Dinosaurs

    • 569 Words
    • 3 Pages

    Theories of the Extinctions of the Dionsaurs: Dinosaurs became extincted 65 million years ago, at the end of the Cretaceous period, something so devastating that it altered the course of life on earth. It seems like it happened so sudden, as geologic time goes, that almost all the dinosaurs living on earth disappeared. So how did these dominant creatures just die off? Was it a slow extinction, or did it happen all of the sudden? These questions bring rise to many different

    • 569 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    Investigation of the Polar Dinosaur

    • 886 Words
    • 4 Pages
    • 2 Works Cited

    conditions present at these polar latitudes. The ice fields of the North Slope of Alaska we know today are thought to have had temperatures ranging from 13-2 degrees Celsius during the Cretaceous period. This hypothesis is based on evidence from flowering plants, and leaf fossils found from the late Cretaceous found in the region. So life around the poles existed in a climate similar to that of Portland, Oregon, which has a mean temperature of 12 degrees, and may have gotten as cold as Alberta

    • 886 Words
    • 4 Pages
    • 2 Works Cited
    Good Essays
Previous
Page12345678922